Diode House

S14K150 EPCOS / TDK Metal Oxide Varistor 150VAC 14mm

The S14K150 Metal Oxide Varistor (MOV) from EPCOS / TDK is a high-performance overvoltage protection device designed for safeguarding electrical and electronic circuits against voltage surges and transient spikes. Its robust construction ensures long-term reliability and stable operation across a wide range of temperatures. This varistor is ideal for both industrial and consumer applications requiring surge protection.

Specifications:

• Manufacturer: TDK / EPCOS
• Series: Disc Varistor Standard 14mm
• Product Category: Varistors (MOVs)
• Mounting Style: PCB Mount
• Termination Style: Radial
• Voltage Rating AC: 150 VAC
• Voltage Rating DC: 200 VDC
• Varistor Voltage: 240 V
• Clamping Voltage: 395 V
• Diameter: 15.5 mm
• Peak Surge Current: 4.5 kA
• Surge Energy Rating: 40 J
• Capacitance: 750 pF
• Operating Temperature Range: -40°C to +105°C
• Tolerance: ±10%
• Current Rating: 50 A
• Lead Spacing: 7.5 mm
• Packaging: Bulk
• Factory Pack Quantity: 500 pcs
• Unit Weight: 4.8 g
• RoHS Compliance: Yes
• Alternate Part Number / Alias: B72214S151K101

Applications / Uses:

• Surge protection in AC and DC circuits
• Industrial machinery and automation equipment
• Household appliances like microwaves, washing machines, and refrigerators
• Power supplies and UPS systems
• Lighting circuits and LED drivers
• Electronic devices sensitive to voltage spikes

Benefits:

• Protects circuits from overvoltage and transient surges
• High surge energy absorption ensures long-term reliability
• Wide operating temperature range suitable for industrial environments
• Compact radial leaded design for easy PCB mounting
• Reduces equipment downtime and maintenance costs

Distributor / Stockist Information:
Diode House – India’s most trusted distributor for industrial electronic components. We supply genuine EPCOS / TDK components with verified quality and competitive pricing. Available across all India.

Alternate Names / Keywords for Searching:
S14K150, B72214S151K101, EPCOS Varistor, TDK MOV 14mm, 150VAC Varistor, Radial Varistor, PCB Mount MOV, Surge Protection Varistor

✅ Professional Note: You can also include brand + part number equivalence in the search section for better visibility:
Brand: EPCOS / TDK | Part Number: S14K150 / B72214S151K101

EPCOS (TDK) S14K175 Varistor is a high-quality Metal Oxide Varistor (MOV) designed to protect electronic circuits and equipment from transient voltage surges and spikes. It offers reliable overvoltage protection in industrial, commercial, and consumer electronics. With a 14mm disc size, it is suitable for PCB mounting and ensures long-term stability under harsh conditions.

This varistor provides excellent clamping characteristics, high surge current handling capability, and consistent performance across a wide temperature range. It is commonly used in power supplies, home appliances, LED drivers, industrial controllers, and other surge-sensitive equipment.

Key Features & Specifications:

Applications:

• Surge protection in power supplies and control circuits
• LED drivers and ballasts
• Inverters and UPS systems
• Home appliances (Refrigerators, Air Conditioners, Washing Machines)
• Industrial automation and control systems
• Consumer electronic devices

Alternate / Equivalent Models (Same Series):

• S14K150 – 150VAC, Varistor Voltage 240V
• S14K175 – 175VAC, Varistor Voltage 270V
• S14K230 – 230VAC, Varistor Voltage 360V
• S14K250 – 250VAC, Varistor Voltage 390V
• S14K275 – 275VAC, Varistor Voltage 430V
• S14K300 – 300VAC, Varistor Voltage 485V
• S14K320 – 320VAC, Varistor Voltage 510V
• S14K385 – 385VAC, Varistor Voltage 625V
• S14K420 – 420VAC, Varistor Voltage 680V

Alternate Names / Keywords for Searching:
EPCOS Varistor 175VAC | TDK MOV S14K175 | Metal Oxide Varistor 14mm | Surge Protection Varistor | MOV 175VAC 14mm | B72214S171K101 | EPCOS Disc Varistor | TDK Surge Suppressor | Varistor 270V Clamping | MOV for Power Supply 

The EPCOS / TDK S20K440 Metal Oxide Varistor (MOV) is a high-performance overvoltage protection device designed for industrial, commercial, and consumer electronic equipment. This 20 mm standard series MOV provides reliable protection against transient voltage spikes, surges, lightning impulses, and switching disturbances.
With a high surge capability of 8 kA and robust disc construction, it ensures long-term stability and safety in demanding applications.

Diode House is one of the most trusted and popular distributors across India, offering genuine, brand-certified EPCOS / TDK varistors with ready stock availability.

Key Features / Benefits

• High surge rating: 8 kA for superior protection
• Wide operating voltage range
• Suitable for AC mains protection (440VAC)
• Long lifetime and stable performance
• Flame-retardant epoxy coating
• Ideal for industrial power applications
• Reliable TDK/EPCOS quality
• Leaded, PCB mount, easy to install
• Low leakage current design
• High energy absorption: 185 joules

Applications / Uses

• SMPS power supplies
• LED Drivers & Lighting Systems
• Industrial Control Panels
• UPS & Inverters
• Motor Drives
• Energy Meters
• Solar Power Systems
• Home Appliances
• BMS and Power Distribution Equipment
• General AC Line Surge Protection

Technical Specifications

Why Buy from Diode House?

• 100% Genuine & Brand-Certified Components
• Direct stock of EPCOS / TDK MOVs
• Fast delivery all over India
• Trusted by thousands of OEMs & manufacturers
• India’s leading distributor for industrial electronic components

All Part Numbers in S20K Series

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K50, S20K60,
S20K75, S20K90, S20K100, S20K115, S20K130, S20K150, S20K175, S20K200,
S20K230, S20K250, S20K275, S20K300, S20K320, S20K350, S20K385, S20K420,
S20K440, S20K460, S20K510

The EPCOS TDK S07K30 Varistor is a high-performance Metal Oxide Varistor (MOV) designed to provide reliable surge and transient voltage protection in a wide range of electronic applications. Built with a 7mm standard disc, this MOV delivers excellent clamping stability, fast response time, and long operational life, making it ideal for sensitive and compact PCB designs.

This varistor effectively protects equipment against voltage spikes, lightning surges, switching transients, and electrical noise, ensuring long-term safety and durability of circuits. EPCOS / TDK MOVs are widely preferred in the industry for their high quality, reliability, and global certification standards.

Applications / Uses:

• Power supply surge protection
• Consumer electronics
• Telecom and networking equipment
• Industrial automation systems
• Home appliances
• LED lighting systems
• Smart meters and control panels
• Surge suppression modules
• General PCB circuit protection

Key Features & Specifications:

• Brand / Manufacturer: EPCOS / TDK
• Series: Standard Disc 7mm MOV
• Part Number: S07K30 (B72207S300K101)
• Product Type: Metal Oxide Varistor
• Mounting Style: PCB Mount
• Lead Type: Radial Leads

Electrical Specifications:

• Varistor Voltage (Vv): 47V
• Clamping Voltage (Vc): 93V
• Rated Voltage AC: 30VAC
• Rated Voltage DC: 38VDC
• Peak Surge Current: 250A
• Energy Rating: 2 Joules
• Capacitance: 1200pF

Mechanical & Environmental:

• Disc Size: 7mm
• Tolerance: ±10%
• Operating Temperature: -40°C to +105°C
• Packaging: Bulk (1000 pcs)
• Unit Weight: 800mg
• Compliance: RoHS, Lead-Free

Benefits:

• Compact 7mm disc size ideal for space-limited PCBs
• High surge absorption and strong clamping performance
• Protects equipment from lightning and switching surges
• Long working life with stable electrical characteristics
• Widely used, industry-trusted EPCOS / TDK reliability
• Easy radial mounting on standard PCBs

Alternate Names / Keywords for Searching (SEO Friendly):

• EPCOS MOV S07K30
• TDK Varistor 30VAC 7mm
• B72207S300K101 MOV
• 47V Surge Protection Varistor
• MOV 7mm Radial Type
• EPCOS TDK Voltage Dependent Resistor
• Disc Varistor 7mm 30VAC

Complete Series Part Numbers (7mm EPCOS MOV Series):

Standard 7mm MOV Series – All Part Numbers:

• S07K17 – 14VAC, 22V
• S07K25 – 20VAC, 34V
• S07K30 – 30VAC, 47V
• S07K35 – 35VAC, 56V
• S07K60 – 50VAC, 82V
• S07K95 – 75VAC, 150V
• S07K130 – 110VAC, 220V
• S07K150 – 130VAC, 270V
• S07K175 – 150VAC, 320V
• S07K230 – 185VAC, 390V
• S07K250 – 210VAC, 430V
• S07K275 – 230VAC, 460V
• S07K300 – 250VAC, 500V
• S07K320 – 275VAC, 520V
• S07K385 – 320VAC, 615V
• S07K420 – 340VAC, 670V
• S07K460 – 385VAC, 775V

About Us – Diode House:

DIODE HOUSE is one of India’s most trusted and popular distributors & stockists of industrial electronic components.

Metal Oxide Varistor (MOV) – High-Performance Surge Protection Devices

Diode House – Trusted Distributor of Industrial Electronic Components Across India

Metal Oxide Varistors (MOVs) are essential electronic components used to protect circuits and devices from voltage spikes, surges, and transient overvoltages. Made from zinc oxide (ZnO) ceramic, MOVs exhibit non-linear resistance characteristics, clamping high-voltage transients while allowing normal operation under standard voltage conditions.

✅ Product Description

MOVs act as voltage-dependent resistors, instantly reducing high-voltage spikes caused by lightning, switching surges, or power induction. They are widely used in industrial, commercial, and consumer electronics for AC/DC mains protection and are available in various diameters, voltage ratings, and energy absorption capabilities to suit all applications.

📌 Applications / Uses

• AC/DC mains surge protection
• Power supplies, SMPS, and LED drivers
• UPS, inverters, and stabilizers
• Motor drives and industrial automation equipment
• Energy meters, distribution boards, and control panels
• Solar inverters and charge controllers
• Semiconductor switching protection (MOSFETs, Transistors, Thyristors)
• Telecommunication and electronic consumer devices

⭐ Key Benefits

• Fast response to voltage transients (nanosecond range)
• Protects sensitive electronics from damage
• Wide operating temperature: –40°C to +105°C
• Compact disc or radial leaded designs for easy PCB mounting
• High peak surge current and energy absorption
• Stable varistor voltage for reliable protection
• Available in multiple sizes and voltage ratings (low-voltage to high-voltage)
• Genuine, brand-certified quality (EPCOS / TDK / Thakor / VCRR)

📦 Technical Specifications (Typical Ranges)

🔍 Keywords / Alternate Names

• MOV (Metal Oxide Varistor)
• TDK MOV, EPCOS MOV
• Thakor / VCRR MOV
• AC surge protection device
• High-voltage and low-voltage varistor
• Industrial, commercial, and consumer protection
• B722xx / 14D / 20D series MOV

S14K14 EPCOS / TDK 14VAC 14mm Varistor – Low-Voltage Surge Protection MOV

Diode House – India’s Most Popular Distributor of Industrial Electronic Components

The EPCOS / TDK S14K14 is a reliable 14mm Metal Oxide Varistor (MOV) designed for low-voltage AC applications. With a 14VAC rating and excellent energy absorption characteristics, this varistor protects sensitive electronic circuits from voltage spikes, transient surges, and switching surges.

✅ Product Description

The S14K14 MOV is ideal for low-voltage AC protection, commonly used in consumer electronics, small power supplies, LED drivers, and control circuits. Its compact 14mm disc size makes it perfect for PCB mounting and compact circuit design.

📌 Applications / Uses

• Low-voltage AC mains protection (up to 14VAC)
• SMPS & small power supply input protection
• LED drivers and low-power lighting circuits
• Consumer electronics surge suppression
• Protection in small industrial control circuits
• Battery-powered devices and low-voltage control panels

⭐ Key Benefits

• Provides reliable surge suppression for low-voltage AC circuits
• High energy absorption (4J)
• Compact 14mm disc size suitable for PCB mounting
• Wide operating temperature range –40°C to +105°C
• Ensures long-term protection of sensitive electronics
• Stable and consistent varistor voltage characteristics
• Genuine EPCOS / TDK quality – trusted in India

🏬 Why Buy from Diode House?

DIODE HOUSE is one of India’s most trusted distributors, supplying only 100% genuine, brand-certified components from leading manufacturers such as:
TDK, EPCOS, ST, TI, ON, NXP, AD, ROHM, TOSHIBA, SAMSUNG, VISHAY, MURATA, CDIL, and more.

We provide ready stock, fast delivery, and guaranteed authentic quality.

Alternate Names

• S14K14 Varistor
• EPCOS 14V MOV
• TDK 14VAC Varistor
• MOV 14mm 14V
• Low-Voltage Metal Oxide Varistor
• B72214S140K101
• PCB Mount Varistor 14V
• Low AC voltage surge protection

All Part Numbers in S14K Series

S14K14, S14K17, S14K20, S14K25, S14K30, S14K35, S14K40, S14K60, S14K75, S14K95,
S14K115, S14K130, S14K150, S14K175, S14K230, S14K250, S14K275, S14K300, S14K320,
S14K350, S14K385, S14K420, S14K440, S14K460, S14K510, S14K560, S14K620, S14K680

The EPCOS / TDK S10K510 is a high-performance Metal Oxide Varistor (MOV) designed for superior surge protection in industrial and commercial electronics. Engineered with Multi-Pulse Advanced Technology, this 10mm disc varistor provides reliable protection against high-energy transients, voltage spikes, and lightning-induced surges.

Widely used in SMPS, LED Drivers, Power Supplies, Panels, Stabilizers, Control Systems, Inverters, and various industrial-grade electronics where stable surge absorption is required.

Key Features & Benefits

• ✔ High Surge Capability: Handles up to 3.5 kA peak surge current
• ✔ Advanced Multi-Pulse Durability: Ensures long-term stability in harsh electrical environments
• ✔ Wide Operating Temperature: Performs smoothly from –40°C to +105°C
• ✔ High Energy Rating: Robust 92 Joule surge energy rating
• ✔ Fast Response Time: Protects sensitive circuits from sudden voltage spikes

Product Specifications

Applications

• SMPS Power Supplies
• LED Drivers and Lighting Systems
• Stabilizers & Inverters
• Industrial Control Systems
• AC Line Protection
• Home Appliances
• Solar Controllers
• Telecom Equipment
• Instrumentation & Automation Panels

Alternate Names

• EPCOS 510VAC Varistor
• TDK S10K510 MOV
• Surge Protection Varistor 510V
• 10mm Varistor High Voltage
• Metal Oxide Varistor 820V
• MOV 10D / 10mm Series
• S10K Series Varistor
• High Voltage MOV 510VAC

All Part Numbers in S10K Series (For Search Optimization)

Below are related part numbers often purchased together:

Low Voltage Series:
S10K11, S10K14, S10K17, S10K20, S10K23, S10K25, S10K30, S10K35, S10K40

Medium Voltage Series:
S10K60, S10K75, S10K90, S10K100, S10K115, S10K130, S10K140, S10K150, S10K160, S10K175, S10K180, S10K200

High Voltage Series:
S10K230, S10K250, S10K275, S10K300, S10K320, S10K350, S10K385, S10K420, S10K460, S10K510, S10K560

The S10K25 from EPCOS / TDK is a high-quality Metal Oxide Varistor (MOV) designed to provide superior transient over-voltage protection in low-voltage electronic circuits. Built with TDK’s proven disc varistor technology, it ensures reliable surge suppression, long service life, and stable clamping performance even in demanding environments.

This MOV is widely used across power supplies, control systems, consumer electronics, industrial electronics, LED drivers, and sensitive microcontroller-based circuits requiring robust surge protection.

✅ Product Description

The TDK S10K25 is a 10mm standard disc MOV rated for 25VAC and 31VDC, offering effective protection against voltage spikes, lightning-induced surges, switching transients, and electrostatic disturbances. Its compact size, consistent varistor voltage, and strong surge endurance make it a preferred choice for PCB-based protection solutions.

⭐ Key Features & Benefits

✔ High Surge Protection: Handles up to 500A peak surge current
✔ Reliable Clamping: Tight clamping voltage of 77V protects sensitive components
✔ Wide Operating Temperature: From –40°C to +105°C
✔ Compact 10mm Disc Size: Ideal for space-restricted PCBs
✔ Stable Varistor Voltage: Precise 39V with ±10% tolerance
✔ High Capacitance (3200pF): Offers additional noise filtering
✔ Long Life & Durability: Designed for repetitive surge events
✔ TDK Quality: Manufactured under strict global quality standards
✔ Suitable for All PCB Mount Applications

🔧 Technical Specifications (Professional Format)

🧩 Applications / Uses

This MOV is suitable for surge protection in:

• LED Drivers & SMPS Power Supplies
• DC Power Lines
• Microcontroller & Logic Circuits
• Small Home Appliances
• Battery Chargers
• Adapters & Low Voltage Supplies
• Control Panels
• IoT & Sensor Protection
• Relays, Timers, Industrial Automation Units

S10K275 – EPCOS / TDK 275VAC 10mm Metal Oxide Varistor (MOV)

Diode House – Trusted Distributor of Industrial Electronic Components Across India

The EPCOS / TDK S10K275 is a 10mm Metal Oxide Varistor (MOV) designed for AC mains surge protection. Rated for 275VAC, it protects electronic circuits from transient voltage spikes, switching surges, and lightning-induced surges, making it ideal for industrial, commercial, and consumer applications.

✅ Product Description

The S10K275 MOV is suitable for AC circuits where compact surge protection is required. Its 10mm disc size allows PCB mounting, with a peak surge current of 2.5 kA and surge energy rating of 43 J, providing reliable and repeatable overvoltage protection.

📌 Applications / Uses

• AC mains surge protection (up to 275VAC)
• Industrial and consumer power supplies
• LED drivers & low- to mid-voltage circuits
• UPS, inverters, and stabilizers
• Motor control and automation equipment
• Energy meters and distribution boards
• Semiconductor switching protection

⭐ Key Benefits

• Peak surge current: 2.5 kA
• Surge energy absorption: 43 J
• Wide operating temperature: –40°C to +105°C
• Compact 10mm disc for easy PCB mounting
• Stable varistor voltage ensures reliable protection
• Genuine EPCOS / TDK quality

📦 Technical Specifications

🔍 Alternate Names / Keywords

• S10K275 Varistor
• EPCOS 275V MOV
• TDK 10mm Metal Oxide Varistor
• MOV 275VAC 10mm
• B72210S271K101
• AC mains surge protection MOV

S14K320 – EPCOS / TDK 320VAC 14mm Metal Oxide Varistor (MOV)

Diode House – India’s Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S14K320 is a 14mm Metal Oxide Varistor (MOV) designed for AC mains overvoltage protection. Rated for 320VAC, this MOV protects electronic circuits from transient voltage spikes, switching surges, and lightning-induced surges, making it ideal for industrial, commercial, and consumer applications.

✅ Product Description

The S14K320 MOV is suitable for medium-to-high voltage AC circuits requiring reliable surge protection. Its 14mm disc size ensures easy PCB mounting while maintaining robust performance with a peak surge current of 4.5 kA.

📌 Applications / Uses

• AC mains overvoltage protection (up to 320VAC)
• Industrial power supplies and SMPS
• LED drivers & lighting circuits
• Stabilizers, UPS, and inverters
• Motor drives and automation equipment
• Energy meters, distribution boards, and control panels
• Solar inverters & charge controllers

⭐ Key Benefits

• High peak surge current: 4.5 kA
• Surge energy absorption: 84 J for repeated surges
• Wide operating temperature range: –40°C to +105°C
• Stable varistor voltage characteristics
• Compact 14mm disc suitable for PCB mounting
• Genuine EPCOS / TDK quality

📦 Technical Specifications

🔍 Alternate Names / Keywords

• S14K320 Varistor
• EPCOS 320V MOV
• TDK 14mm Varistor
• MOV 320VAC 14mm
• Metal Oxide Varistor 510V
• B72214S321K101
• Industrial AC surge protection MOV

📘 Popular S14K Series Part Numbers

S14K14, S14K25, S14K40, S14K50, S14K60, S14K75, S14K100, S14K115, S14K130, S14K150,
S14K175, S14K200, S14K225, S14K250, S14K275, S14K300, S14K320, S14K330, S14K360, S14K390,
S14K430, S14K470, S14K510, S14K560, S14K610, S14K680, S14K750

Diode House offers the genuine EPCOS / TDK S14K300 MOV Varistor, designed for robust surge suppression in AC line protection circuits. This 14mm disc varistor provides stable clamping characteristics, long service life, and reliable performance under high-energy surge events.

Product Description

The S14K300 is a compact, PCB-mount Metal Oxide Varistor (MOV) engineered to protect sensitive electronic circuits from voltage spikes, transients, surges, and lightning-induced voltage abnormalities. Widely used in power supplies, industrial controllers, SMPS, UPS systems, EV chargers, inverters, and consumer electronics.

Key Features & Benefits

• High Surge Handling: 4.5kA peak surge capability for strong transient protection
• Stable Varistor Voltage: 470V for consistent clamping performance
• Wide Operating Temperature: –40°C to +105°C suitable for industrial environments
• High Energy Rating: 76 Joules for endurance during repetitive surges
• Compact & Rugged: 14mm disc size ideal for space-constrained PCB designs
• Radial Leaded Construction: Easy to mount on standard PCBs
• Long Life & Reliable: EPCOS/TDK quality ensures better stability and durability
• RoHS Compliant: Safe for new product designs

Technical Specifications

📌 Applications / Uses

• AC Mains Line Protection (110V / 230V)
• SMPS Power Supplies
• Motor Drives & Industrial Control Panels
• UPS / Inverters / Stabilizers
• Solar Power Systems
• EV Chargers, Charging Stations
• Home Appliances Surge Protection
• LED Drivers & Ballasts
• Communication Equipment Spike Protection

Alternate Names / Search Keywords

• S14K300 Varistor
• EPCOS 14K300 MOV
• TDK MOV 300VAC
• 14mm Varistor 300V
• 300VAC MOV 14mm
• B72214S301K101
• Metal Oxide Varistor 300V

S20K300 – EPCOS / TDK 300VAC 20mm Advanced Metal Oxide Varistor (MOV)

Diode House – Trusted Distributor of Industrial Electronic Components Across India

The EPCOS / TDK S20K300 is a 20mm Advanced Metal Oxide Varistor (MOV) designed to protect AC/DC circuits from overvoltage transients, lightning surges, and switching spikes. Rated for 300VAC, it provides high energy absorption and reliable circuit protection in industrial, commercial, and consumer applications.

✅ Product Description

The S20K300 Advanced MOV is ideal for high-reliability AC mains surge protection. Its 21.5mm disc diameter and radial lead design allow easy PCB mounting. With a peak surge current of 1 kA and surge energy rating of 250 J, this MOV ensures robust, repeatable protection for sensitive electronics.

📌 Applications / Uses

• AC mains surge protection (up to 300VAC)
• Industrial power supplies and SMPS
• LED drivers & lighting circuits
• UPS, inverters, and stabilizers
• Motor drives and automation equipment
• Energy meters and distribution boards
• Solar inverters and charge controllers
• Semiconductor switching protection (MOSFETs, Thyristors, Transistors)

⭐ Key Benefits

• Peak surge current: 1 kA
• High energy absorption: 250 J
• Wide operating temperature: –40°C to +105°C
• Stable varistor voltage for reliable protection
• Compact 20mm disc suitable for PCB mounting
• Genuine EPCOS / TDK quality – trusted in India

📦 Technical Specifications

🔍 Alternate Names / Keywords

• S20K300 Varistor
• EPCOS 300V Advanced MOV
• TDK 20mm Advanced Varistor
• S20K300E2
• High-energy AC surge protection MOV
• Industrial and commercial MOV

Engineered using Zinc Oxide semiconductor technology, Littelfuse MOVs offer stable performance, wide operating voltage range, and superior clamping characteristics. They are available in various disc sizes such as 7mm, 10mm, 14mm, 20mm with AC and DC voltage ratings for multiple applications.

Uses, Details & Benefits:

• Protects power supplies, control panels, SMPS, LED drivers, PCBs, industrial controllers
• Prevents damage due to lightning surges and voltage spikes
• High surge current rating with reliable long-term stability
• Low leakage current and quick response time (< 25 ns)
• Wide AC voltage range (from 130VAC to 680VAC depending on model)
• Suitable for single-phase AC line-to-neutral, AC line-to-ground applications
• Perfect for stabilizers, inverters, UPS, EV chargers, adapters, consumer electronics, telecom equipment
• Available in multiple disc sizes: 7D / 10D / 14D / 20D
• Excellent clamping performance with high energy absorption

Key Technical Specifications (General):

• Varistor Voltage Range: 130V to 1100V (model dependent)
• Maximum Surge Current: Up to 6kA – 22kA (8/20µs wave)
• Clamping Voltage: 200V – 1800V
• Energy Rating: 10J – 700J (depending on size)
• Response Time: < 25 ns
• Mounting Type: Radial Lead / Through-Hole
• Operating Temperature: –40°C to +105°C
• Disc Size Options: 7mm / 10mm / 14mm / 20mm

Why Buy from Diode House? (Professional Statement)

Diode House is one of the most trusted and most popular stockists & distributors across India for all industrial electronic components.
We provide 100% genuine, brand-certified Littelfuse MOVs with ready stock, best pricing, and fast delivery.

Alternate Names:-

Littelfuse MOV
Littelfuse Varistor
MOV Surge Protector
Metal Oxide Varistor
Littelfuse Surge Suppressor
Littelfuse 7D / 10D / 14D / 20D MOV
Littelfuse Transient Voltage Suppressor
Radial Varistor
Littelfuse TVR Series Equivalent
Over Voltage Protection Component

Popular Littelfuse MOV Series Part Numbers (Complete Range Below)

7mm Series (7D / ZA07 Series)

• V07E130P, V07E140P, V07E150P
• V07E160P, V07E175P, V07E180P
• V07E200P, V07E220P, V07E240P
• V07E270P, V07E300P, V07E320P
• V07E350P, V07E390P, V07E430P, V07E470P
• V07E510P, V07E560P, V07E620P
• V07E680P, V07E750P, V07E820P

10mm Series (10D / ZA10 Series)

• V10E130P, V10E140P, V10E150P
• V10E160P, V10E175P, V10E180P
• V10E200P, V10E220P, V10E240P
• V10E270P, V10E300P, V10E320P
• V10E350P, V10E390P, V10E430P, V10E470P
• V10E510P, V10E560P, V10E620P
• V10E680P, V10E750P, V10E820P

14mm Series (14D / ZA14 Series)

• V14E130P, V14E140P, V14E150P
• V14E160P, V14E175P, V14E180P
• V14E200P, V14E220P, V14E240P
• V14E270P, V14E300P, V14E320P
• V14E350P, V14E390P, V14E430P, V14E470P
• V14E510P, V14E560P, V14E620P
• V14E680P, V14E750P, V14E820P

20mm Series (20D / ZA20 Series)

• V20E130P, V20E140P, V20E150P
• V20E160P, V20E175P, V20E180P
• V20E200P, V20E220P, V20E240P
• V20E270P, V20E300P, V20E320P
• V20E350P, V20E390P, V20E430P, V20E470P
• V20E510P, V20E560P, V20E620P
• V20E680P, V20E750P, V20E820P

THINKING Metal Oxide Varistors (MOVs) are highly reliable surge protection components designed to safeguard electronic circuits from voltage spikes, lightning surges, switching transients, and power line disturbances. These MOVs offer fast response time, stable performance, wide operating voltage range, and long lifespan — making them ideal for industrial, commercial, and consumer electronics applications.

As one of the most popular and trusted distributors across India, DIODE HOUSE supplies 100% brand-certified, genuine MOV components for OEMs, EMS companies, and industrial manufacturers.

Uses & Applications

• Surge protection in SMPS power supplies
• Protection for LED drivers, stabilizers, inverters, UPS, VFDs
• Motor control circuits & general power lines
• Solar charge controllers & battery chargers
• Home appliances (ACs, TVs, Refrigerators, Washing Machines)
• Industrial electronic equipment
• Telecom equipment, instrumentation & automation devices

Key Benefits

• Excellent surge absorption capability
• Fast clamping response time
• Wide range of AC/DC voltage ratings
• High reliability & stable performance
• Flame-retardant epoxy coating
• Long operational life
• Suitable for PCB mounting (radial leads)

Specifications (General)

• Type: Metal Oxide Varistor (MOV)
• Mounting Style: Radial / PCB Mount
• Product Series: THINKING MOV Series (07D, 10D, 14D, 20D)
• Disc Size Options: 7 mm / 10 mm / 14 mm / 20 mm
• Voltage Tolerance: ±10%
• Operating Temperature: –40°C to +85°C
• Clamping Voltage: Depends on part number
• Energy Rating: Higher disc size = higher surge capability

THINKING MOV Part Numbers – Complete Series

THINKING 07D Series

• 07D101K (100V) 07D151K (150V) 07D201K (200V) 07D241K (240V) 07D271K (270V) 07D301K (300V) 07D361K (360V) 07D391K (390V) 07D431K (430V) 07D471K (470V) 07D511K (510V) 07D561K (560V) 07D621K (620V) 07D681K (680V) 07D751K (750V)

THINKING 10D Series

• 10D101K (100V) 10D151K (150V) 10D201K (200V) 10D241K (240V) 10D271K (270V) 10D301K (300V) 10D361K (360V) 10D391K (390V) 10D431K (430V) 10D471K (470V) 10D511K (510V) 10D561K (560V) 10D621K (620V) 10D681K (680V) 10D751K (750V)

THINKING 14D Series

• 14D101K (100V) 14D151K (150V) 14D201K (200V) 14D241K (240V) 14D271K (270V) 14D301K (300V) 14D361K (360V) 14D391K (390V) 14D431K (430V) 14D471K (470V) 14D511K (510V) 14D561K (560V) 14D621K (620V) 14D681K (680V) 14D751K (750V)

THINKING 20D Series

• 20D101K (100V) 20D151K (150V) 20D201K (200V) 20D241K (240V) 20D271K (270V) 20D301K (300V) 20D361K (360V) 20D391K (390V) 20D431K (430V) 20D471K (470V) 20D511K (510V) 20D561K (560V) 20D621K (620V) 20D681K (680V)20D751K (750V)

S20K250 EPCOS / TDK 250VAC 20mm Varistor – High-Power Surge Protection MOV

Diode House – India’s Most Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S20K250 is a high-performance 20mm Metal Oxide Varistor (MOV) designed for industrial and commercial AC mains surge protection. With a 250VAC rating, high peak surge capability, and robust energy absorption, this MOV is ideal for heavy-duty protection of power supplies, inverters, stabilizers, and industrial electronic equipment.

✅ Product Description

The S20K250 MOV provides strong protection against voltage spikes, lightning surges, and switching transients in AC mains circuits. Its 20mm disc size and high surge energy rating (140J) make it suitable for circuits requiring high reliability and durability.

📌 Applications / Uses

• AC mains surge protection (up to 250VAC)
• Industrial power supplies & SMPS
• LED drivers & lighting circuits
• Stabilizers, UPS, and inverters
• Motor drives and automation equipment
• Energy meters, MCC panels, and distribution boards
• Solar inverters & charge controllers
• Commercial electronics requiring high surge endurance

⭐ Key Benefits

• High peak surge current (8kA) for industrial applications
• Large energy absorption (140J) for repeated surges
• Wide operating temperature range –40°C to +105°C
• Stable and reliable varistor voltage characteristics
• Robust 20mm disc for heavy-duty PCB mounting
• Genuine EPCOS / TDK quality – trusted globally

🔍 Alternate Names / Keywords

• S20K250 Varistor
• EPCOS 250V MOV
• TDK 20mm Varistor
• MOV 250VAC 20mm
• Metal Oxide Varistor 250V
• B72220S251K101
• High-power surge protection MOV
• Industrial AC mains MOV

📘 Popular S20K Series Part Numbers

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K60, S20K75, S20K95,
S20K115, S20K130, S20K150, S20K175, S20K230, S20K250, S20K275, S20K300, S20K320,
S20K350, S20K385, S20K420, S20K440, S20K460, S20K510, S20K560, S20K620, S20K680

S20K75 – EPCOS / TDK 75VAC 20mm Metal Oxide Varistor (MOV)

Diode House – India’s Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S20K75 is a high-performance 20mm Metal Oxide Varistor (MOV) designed for AC mains overvoltage protection. Rated for 75VAC, this MOV protects sensitive electronics from voltage spikes, switching surges, and lightning transients in industrial, commercial, and consumer circuits.

✅ Product Description

The S20K75 MOV is ideal for medium-voltage AC circuits. Its robust 20mm disc size and high peak surge capability ensure reliable surge suppression and long-term durability in PCB-mounted applications.

📌 Applications / Uses

• AC mains surge protection (up to 75VAC)
• Industrial power supplies and SMPS
• LED drivers & lighting circuits
• Stabilizers, UPS, and inverters
• Motor drives and automation equipment
• Energy meters, distribution boards, and control panels

⭐ Key Benefits

• High peak surge current: 6.5 kA
• Energy absorption: 40 J for repeated surges
• Wide operating temperature range: –40°C to +105°C
• Stable varistor voltage characteristics for reliable protection
• Robust 20mm disc for PCB mounting
• Genuine EPCOS / TDK quality

📦 Technical Specifications

🔍 Alternate Names / Keywords

• S20K75 Varistor
• EPCOS 75V MOV
• TDK 20mm Varistor
• MOV 75VAC 20mm
• Metal Oxide Varistor 75V
• B72220S750K101
• Industrial AC surge protection MOV

📘 Popular S20K Series Part Numbers

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K60, S20K75, S20K95,
S20K115, S20K130, S20K150, S20K175, S20K230, S20K250, S20K275, S20K300, S20K320,
S20K350, S20K385, S20K420, S20K440, S20K460, S20K510, S20K560, S20K620, S20K680

Diode House offers premium quality EPCOS / TDK S20K385 MOV Varistors, widely used for protecting industrial and commercial electronic circuits from high-energy voltage spikes. These MOVs deliver excellent surge handling capability, fast response time, and long-term reliability, making them ideal for demanding applications.

✨ Product Description

The S20K385 is a 20mm disc metal oxide varistor (MOV) designed to protect electronic equipment from transient overvoltage events. Built to TDK’s high manufacturing standards, it offers 620V varistor voltage, 8kA surge capability, and 150J energy absorption, making it suitable for AC mains protection in harsh industrial environments.

🔧 Key Features & Benefits

✔️ Rated Voltage: 385VAC / 505VDC
✔️ High Surge Protection: 8kA peak surge current
✔️ Energy Rating: 150 Joules for robust protection
✔️ Fast Clamping Action: Clamping voltage only 1.025kV
✔️ Reliable EPCOS/TDK quality with long operational life
✔️ UL94V-0 compliant flame-retardant construction
✔️ Wide temperature range: –40°C to +105°C
✔️ Ideal for high-energy surge applications
✔️ Stable performance even under repetitive surge events

🔌 Applications / Uses

Perfect for use in:
• SMPS Power Supplies
• Industrial Control Equipment
• LED Lighting Drivers
• Inverters, UPS Systems
• Home Appliances
• Energy Meters
• Solar Inverters & Controllers
• Power Distribution Panels
• PCB-Based Protection Circuits
• Stabilizers & Servo Controllers

📦 Technical Specifications (Professional Format)

📚 Alternate Names

• EPCOS S20K385 MOV
• TDK 385VAC Varistor
• B72220S381K101
• MOV 20mm 385V
• Metal Oxide Varistor 20mm
• Surge Protection Varistor
• S20K Series MOV
• 385VAC MOV TDK
• High Energy MOV 20mm

Zinc Oxide Varistors (ZnO Varistors) Overview

Definition:
A Zinc Oxide Varistor (ZnO Varistor) is a voltage-dependent resistor that protects electrical and electronic circuits from transient voltage spikes and surges. It is made primarily from zinc oxide (ZnO) grains combined with other metal oxides, pressed into a disc or block, and fitted with electrodes.

How It Works

• Non-linear resistance: At normal voltage, the varistor exhibits very high resistance (almost insulating).
• Clamping action: When voltage exceeds a threshold (varistor voltage), resistance drops sharply, diverting the excess current away from sensitive components.
• Energy absorption: ZnO varistors absorb energy from surges and spikes, protecting equipment from damage.

Key Characteristics

• Varistor Voltage (V): Voltage at which the varistor starts conducting significant current.
• Clamping Voltage (Vclamp): Maximum voltage the varistor allows across the protected circuit during a surge.
• Peak Surge Current (Imax): Maximum transient current it can safely handle.
• Energy Rating (Joules): Total energy it can absorb without damage.
• Response Time: Extremely fast (<25 ns typical).
• Operating Temperature Range: Usually –40°C to +105°C or higher for industrial models.

Applications

• AC mains surge protection in industrial and consumer electronics
• Power supplies, SMPS, LED drivers, inverters, stabilizers
• Energy meters and distribution panels
• Lightning and switching surge suppression
• Motor drives and solar inverters

Advantages of ZnO Varistors

• High surge current capability
• Fast response to voltage transients
• Compact and reliable
• Stable characteristics over long operational life
• Non-polarized: can be used in AC or DC circuits

Typical ZnO Varistor Packages

• Disc Type: Most common; sizes range from 7mm to 20mm+
• Block / Multilayer: For high energy industrial applications
• Lead Style: Radial leads, axial leads, or surface-mount devices (SMD)

S20K320 – EPCOS / TDK 320VAC 20mm Metal Oxide Varistor (MOV)

Diode House – India’s Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S20K320 is a high-performance 20mm Metal Oxide Varistor (MOV) designed for industrial AC mains overvoltage protection. Rated for 320VAC, this MOV safeguards sensitive electronics from transient voltage spikes, switching surges, and lightning-induced surges.

✅ Product Description

The S20K320 MOV is suitable for high-energy AC circuits where reliable surge protection is critical. Its 20mm disc size and high peak surge current rating (8 kA) ensure robust performance for industrial and commercial electronics.

📌 Applications / Uses

• AC mains overvoltage protection (up to 320VAC)
• Industrial power supplies and SMPS
• LED drivers & high-power lighting circuits
• Stabilizers, UPS, and inverters
• Motor drives and automation equipment
• Energy meters, distribution boards, and industrial panels
• Solar inverters and charge controllers

⭐ Key Benefits

• High peak surge current: 8 kA
• Surge energy absorption: 184 J for repeated surges
• Wide operating temperature: –40°C to +105°C
• Stable varistor voltage for reliable protection
• Robust 20mm disc suitable for PCB mounting
• Genuine EPCOS / TDK quality

📦 Technical Specifications

🔍 Alternate Names / Keywords

• S20K320 Varistor
• EPCOS 320V MOV
• TDK 20mm Varistor
• MOV 320VAC 20mm
• Metal Oxide Varistor 510V
• B72220S321K101
• Industrial AC surge protection MOV

📘 Popular S20K Series Part Numbers

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K60, S20K75, S20K95,
S20K115, S20K130, S20K150, S20K175, S20K230, S20K250, S20K275, S20K300, S20K320,
S20K350, S20K385, S20K420, S20K440, S20K460, S20K510, S20K560, S20K620, S20K680

S20K130 EPCOS / TDK 130VAC 20mm Varistor – Heavy-Duty Surge Protection MOV

Diode House – India’s Most Popular & Trusted Distributors of Industrial Electronic Components

The EPCOS / TDK S20K130 is a high-performance 20mm Metal Oxide Varistor (MOV) designed for heavy surge suppression applications. With a large disc size (20mm) and high surge current capability, it offers excellent protection from transient spikes, lightning impulses, AC line disturbances, and industrial switching surges.

✅ Product Description

The S20K130 MOV provides strong protection in both consumer and industrial electronics. It is suitable for circuits requiring higher surge endurance and enhanced reliability, commonly used at the AC input stage for 130VAC applications.

📌 Applications / Uses

• AC Mains Protection (up to 130VAC)
• High-Surge Industrial Power Supplies
• LED Drivers & Lighting Equipment
• Stabilizers & Voltage Controllers
• UPS, Inverters, SMPS Units
• Energy Meters, Control Panels, MCC Panels
• Solar Power Systems & Charge Controllers
• Motor Controllers, VFDs & Automation Equipment
• Home Appliances & Commercial Electronics

⭐ Key Benefits

• Heavy-duty 20mm MOV with 8kA peak surge current
• Long service life under repeated surges
• Very reliable clamping characteristics
• High energy absorption (74 Joules)
• Wide operating temperature range –40°C to +105°C
• Ensures safety of sensitive electronics
• Suitable for both commercial and industrial-grade equipment
• Genuine EPCOS/TDK quality – stable and consistent performance

🏬 Why Choose Diode House?

DIODE HOUSE is the most preferred and trusted distributor all over India, supplying:

• 100% original, brand-certified components
• Only from top manufacturers: TDK, EPCOS, ST, TI, ON, NXP, AD, ROHM, TOSHIBA, SAMSUNG, VISHAY, MURATA, CDIL, etc.
• Ready stock, fast delivery, pan-India supply
• Top-quality customer support for industrial electronic components

🔍 Alternate Names / Search Keywords

• S20K130 Varistor
• EPCOS 130V MOV
• TDK 20mm Varistor
• MOV 130VAC 20mm
• Heavy Duty Varistor
• Metal Oxide Varistor 130V
• Surge Protection MOV
• B72220S131K101
• AC mains surge suppressor
• High surge current MOV

📘 Popular Part Numbers in the S20K Series (SEO Keywords)

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K60, S20K75,
S20K95, S20K115, S20K130, S20K150, S20K175, S20K230, S20K250, S20K275,
S20K300, S20K320, S20K350, S20K385, S20K420, S20K440, S20K460, S20K510,
S20K560, S20K620, S20K680

S20K460 – EPCOS / TDK 460VAC 20mm Metal Oxide Varistor (MOV)

Diode House – India’s Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S20K460 is a high-power 20mm Metal Oxide Varistor (MOV) designed for industrial AC mains surge protection. Rated for 460VAC, this MOV reliably protects power supplies, inverters, stabilizers, and other industrial electronics from voltage spikes and transient surges.

✅ Product Description

The S20K460 MOV provides strong protection against transient voltage spikes, switching surges, and lightning-induced surges. Its 20mm disc size and high energy absorption rating of 195J make it ideal for industrial circuits requiring robust, long-term reliability.

📌 Applications / Uses

• AC mains surge protection (up to 460VAC)
• Industrial power supplies and SMPS
• LED drivers & high-power lighting circuits
• Stabilizers, UPS, and inverters
• Motor drives and automation equipment
• Energy meters, distribution boards, and MCC panels
• Solar inverters and charge controllers
• High-voltage industrial electronics

⭐ Key Benefits

• High peak surge current (8 kA)
• Large energy absorption (195 J) for repeated surges
• Wide operating temperature: –40°C to +105°C
• Stable and reliable varistor voltage characteristics
• Robust 20mm disc for heavy-duty PCB mounting
• Genuine EPCOS / TDK quality

🔍 Alternate Names / Keywords

• S20K460 Varistor
• EPCOS 460V MOV
• TDK 20mm Varistor
• MOV 460VAC 20mm
• Metal Oxide Varistor 460V
• B72220S461K101
• High-power surge protection MOV

📘 Popular S20K Series Part Numbers

S20K14, S20K17, S20K20, S20K25, S20K30, S20K35, S20K40, S20K60, S20K75, S20K95,
S20K115, S20K130, S20K150, S20K175, S20K230, S20K250, S20K275, S20K300, S20K320,
S20K350, S20K385, S20K420, S20K440, S20K460, S20K510, S20K560, S20K620, S20K680

The S14K680 EPCOS / TDK Metal Oxide Varistor is a high-performance over-voltage protection device designed for industrial and commercial electronic circuits. This 14mm radial-lead MOV provides reliable protection against transient surges, lightning spikes, switching surges, and abnormal voltage conditions. It is widely used in power supplies, SMPS, motors, inverters, stabilizers, LED drivers, UPS systems, and all AC line protection applications.

Diode House is among the most popular & trusted distributors all over India, supplying 100% genuine, brand-certified industrial electronic components with ready stock availability.

Key Features & Benefits

• High surge protection capability (up to 4.5 kA)
• Wide operating temperature range (-40°C to +105°C)
• Excellent clamping performance for line protection
• Suitable for AC mains protection up to 680 VAC
• Long-life stability and reliable TDK/EPCOS quality
• PCB Mount radial leaded construction
• Ideal for EMI/SMPS/Industrial/Power Electronics applications

Technical Specifications

Applications

• LED Drivers
• SMPS & Power Supplies
• Stabilizers
• Inverters
• Solar Controllers
• UPS / Inverter Systems
• Motor Control Boards
• Home Appliances
• Industrial Automation Boards
• Energy Meters
• Surge Protection Circuits
• Line-to-Line & Line-to-Ground Protection

Alternate Names

• S14K680 MOV
• EPCOS 680VAC Varistor
• TDK S14K Series MOV
• B72214S681K101
• 14D681K equivalent
• 680V Varistor 14mm
• Metal Oxide Varistor 680V
• AC Line Protection MOV
• Surge Protection Varistor

S07K25 EPCOS / TDK 25VAC 7mm Varistor – Compact Surge Protection MOV

Diode House – India’s Trusted Distributor of Industrial Electronic Components

The EPCOS / TDK S07K25 is a high-quality 7mm Metal Oxide Varistor (MOV) designed for low-voltage AC surge protection. With a 25VAC rating and robust energy absorption, it safeguards sensitive electronics against voltage spikes, transient surges, and switching disturbances. Its compact size makes it ideal for PCB mounting in small and medium electronics circuits.

✅ Product Description

The S07K25 MOV is perfect for low-voltage AC circuits, LED drivers, small power supplies, and control electronics. It provides reliable surge suppression in a compact 7mm package suitable for modern PCB designs.

📌 Applications / Uses

• Low-voltage AC mains protection (up to 25VAC)
• SMPS and small power supply protection
• LED drivers and low-power lighting circuits
• Consumer electronics surge suppression
• Industrial control circuits and instrumentation
• Battery-powered or low-voltage devices

⭐ Key Benefits

• Reliable protection against voltage spikes and surges
• Peak surge current up to 1.2 kA (typical for 7mm MOVs)
• Energy absorption around 4–5 Joules
• Compact 7mm disc size – ideal for PCB mounting
• Wide operating temperature range: –40°C to +105°C
• Stable and consistent varistor voltage characteristics
• Genuine EPCOS / TDK quality

🔍 Alternate Names / Keywords

• S07K25 Varistor
• EPCOS 25V MOV
• TDK 7mm Varistor
• Low-Voltage MOV 25VAC
• Metal Oxide Varistor 7mm
• B72207S250K101
• PCB Mount Varistor 25V
• Low AC voltage surge protection

📘 S07K Series Part Numbers

S07K14, S07K17, S07K20, S07K25, S07K30, S07K35, S07K40, S07K50, S07K60, S07K75,
S07K95, S07K115, S07K130, S07K150, S07K175, S07K230, S07K250

Littelfuse Metal Oxide Varistors (MOVs) are high-reliability surge protection components designed to protect electronic equipment from transient voltage spikes, lightning surges, switching surges, electrostatic discharge (ESD), and other overvoltage events. These MOVs are engineered using metal oxide materials that offer fast response time and robust clamping capability.

Diode House is one of the most popular and trusted distributors across India for all industrial electronic components, offering genuine and brand-certified Littelfuse MOVs in multiple sizes and voltage ratings.

Key Features & Benefits

• Fast Response Time – Provides immediate protection against transient surges
• High Surge Current Capability – Ensures longer life and better protection in harsh environments
• Wide Operating Voltage Range – Suitable for both AC & DC circuits
• Excellent Clamping Voltage Characteristics – Protects circuits from damage effectively
• High Reliability & Long Service Life – Built with premium-quality MOV discs
• Radial Leaded Construction – Easy for PCB mounting
• RoHS Compliant
• Industry-standard Sizes – 5mm, 7mm, 10mm, 14mm, 20mm

Applications / Uses

Ideal for protection in:

• LED Drivers & SMPS Power Supplies
• Home Appliances (AC, Refrigerator, Washing Machine)
• Power Meters, Energy Meters
• Stabilizers, UPS, Inverters
• Industrial Control Panels
• Communication Devices
• Automotive Electronics
• Consumer Electronics
• Solar Controllers & Battery Chargers

Technical Specifications (General MOV Series)