MOV-20D431K Metal Oxide Varistor Thakor (VCRR)

Product Description

Product/ServiceDescription: MOV-20D431K Metal Oxide Varistor (MOV)

GeneralOverview:

The MOV-20D431K is a metal oxide varistor(MOV) manufactured by Thakor (VCRR). It is designed to protectelectronic circuits and equipment from voltage surges, including those causedby lightning strikes, power line disturbances, or switching transients. Thiscomponent is commonly used in power supplies, industrial control systems,consumer electronics, and communication equipment.

TechnicalSpecifications:

1. Varistor Voltage (V1mA): 430V ±10%
   (The voltage at which 1 mA of current flows through the varistor.)
2. Maximum Clamping Voltage (Vc): 710V
   (The maximum voltage the MOV allows to pass when diverting surge current.)
3. Energy Absorption Capacity: 190 Joules
   (Ability to absorb energy from a transient overvoltage.)
4. Maximum Peak Current (Imax): 6,500A
   (Surge current capacity for an 8/20 µs waveform.)
5. Response Time: < 25 nanoseconds
   (Fast response to transient overvoltage events.)
6. Disc Size (Diameter): 20mm
7. Operating Temperature Range: -40C to +85C
8. Typical Applications:
• AC power systems
• Surge protection devices (SPDs)
• Power supplies and adapters
• Industrial control circuits
• Household appliances

Benefitsand Features:

1. Surge Protection:
   Efficiently protects sensitive circuits from voltage surges and spikes.
2. High Energy Absorption:
   Offers robust energy handling, ensuring long-term reliability in demanding environments.
3. Compact Design:
   The 20mm disc size makes it ideal for applications requiring space efficiency.
4. Wide Voltage Range Compatibility:
   Suitable for various AC and DC voltage applications.
5. Reliability:
   Provides consistent performance with a fast response time of less than 25 ns.
6. Cost-Effective:
   Affordable solution for protecting expensive equipment.

Applications:

• Power Supply Protection: Prevents overvoltage damage to transformers, power adapters, and power supplies.
• Household Appliances: Safeguards appliances like microwaves, washing machines, and refrigerators from power surges.
• Telecommunication Equipment: Protects routers, modems, and telephone systems from transient voltage spikes.
• Industrial Control Systems: Ensures longevity and reliability of machinery and control systems operating in harsh environments.
• LED Lighting Systems: Protects LEDs and related components from surge damage.

EquivalentBrands and Part Numbers:

Several manufacturers produce equivalentvaristors with similar specifications to the MOV-20D431K:

1. EPCOS / TDK: B72220P431K101 (20mm disc size, 430V rating)
2. Littelfuse: V20E430P (20mm, 430V MOV)
3. Panasonic: ERZ-V20D431 (20mm, 430V MOV)
4. Bourns: MOV-20D431K (Direct equivalent under Bourns branding)
5. Vishay: VDRS20P430BSE (20mm, 430V MOV)

KeyConsiderations:

• Ensure the MOV is rated to handle the maximum surge energy and current in your application.
• Use proper installation practices to avoid thermal stress or improper clamping behavior.
• For high-frequency circuits, additional protection like TVS diodes may be needed alongside the MOV for optimal performance.

Let me know if you'd like further detailsabout any specific equivalent brand or additional information on MOV usage!