14D431K MOV Varistor

14D431K MOV varistor (430V), also referred to as VDR-14D431K, is engineered for overvoltage protection in power supply units, industrial electronics and AC distribution systems. It provides fast clamping response and reliable surge endurance to safeguard circuits against transient voltage events. Also known as: 14D431

This varistor is commonly applied in AC mains input stages, industrial control systems and electrical equipment requiring stable surge suppression performance.

With a nominal varistor voltage of 430V, it effectively absorbs transient spikes generated by lightning strikes, switching operations and unstable grid conditions.

Electrical Characteristics:
Varistor Voltage (1mA): 430V ±10%
Maximum Continuous Voltage: 275VAC / 350VDC
Clamping Voltage (8/20μs): 710V @ specified current
Peak Surge Current (8/20μs): 4.5kA
Surge Energy (10/1000μs): 110J
Capacitance (1kHz): approx. 480pF

Mechanical & Physical:
Disc Diameter: 14mm
Lead Type: Radial
Lead Spacing: 7.5mm
Mounting Style: Through Hole / PCB Mount
Packaging: Bulk

Environmental Characteristics:
Operating Temperature Range: -40°C to +105°C
Storage Temperature Range: -40°C to +125°C
Humidity Resistance: Suitable for industrial environments

Compliance & General:
RoHS: Compliant
Product Type: Metal Oxide Varistor (MOV)
Tolerance: ±10%

Typical Applications:
AC power input protection
Industrial automation equipment
Switching power supplies
Motor drive systems
Power distribution units

This component improves system reliability by limiting transient overvoltage and protecting sensitive circuits.

Why Choose Our 14D431K MOV Varistor:
Reliable alternative to major brands such as TDK EPCOS and Littelfuse
Stable electrical characteristics with strict quality control
14mm disc provides higher energy handling capability
Suitable for demanding industrial surge environments
Flexible MOQ and fast delivery support
Free samples available for engineering validation

Reference Models:
S14K275 (TDK EPCOS)
B72214S0271K101 (TDK EPCOS)

All trademarks and model references belong to their respective owners and are used for comparison purposes only.