14D391K MOV Varistor

14D391K MOV varistor (390V), also known as VDR-14D391K, is designed for surge protection in power supply systems, industrial electronics and AC line applications. It delivers fast voltage clamping and stable surge endurance to protect circuits from transient overvoltage events.

Also known as: 14D391

This component is commonly used in AC input protection, industrial control equipment and power distribution systems where reliable surge suppression is required.

With a nominal varistor voltage of 390V, it effectively absorbs transient spikes caused by lightning, switching operations and unstable grid conditions.

Electrical Characteristics:
Varistor Voltage (1mA): 390V ±10%
Maximum Continuous Voltage: 250VAC / 320VDC
Clamping Voltage (8/20μs): 650V @ specified current
Peak Surge Current (8/20μs): 4.5kA
Surge Energy (10/1000μs): 100J
Capacitance (1kHz): approx. 520pF

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 systems
Switching power supplies
Motor control circuits
Power distribution equipment

This varistor enhances system reliability by limiting transient overvoltage and protecting sensitive components.

Why Choose Our 14D391K MOV Varistor:
Alternative supply option to major brands such as TDK EPCOS
Stable electrical performance with strict quality control
14mm disc provides reliable energy absorption capability
Suitable for industrial and power system applications
Flexible MOQ and fast delivery support
Free samples available for evaluation

Reference Models:
S14K250 (TDK EPCOS)
B72214S0251K101 (TDK EPCOS)

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

For datasheet, quotation or sample request:

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