14D680K MOV Varistor 68V

14D680K MOV varistor (68V), also known as VDR-14D680K, is designed for higher voltage DC systems where enhanced surge protection and increased voltage margin are required.

Compared with models such as 14D560K, this device is more suitable for applications operating above 48V DC, offering improved tolerance against voltage spikes and repetitive transient stress.

Typical Use Case:

14D680K is widely used in high voltage DC power supplies, industrial automation systems, communication infrastructure and embedded electronics to protect against switching surges, inductive transients and electrostatic discharge (ESD).

The 14mm disc structure provides enhanced energy absorption capability while maintaining stable clamping performance under repeated surge conditions.

Key Electrical Characteristics:

Varistor Voltage (1mA): 68V ±10%

Maximum Continuous Voltage: 40VAC / 56VDC

Maximum Clamping Voltage: approx. 135V

Peak Surge Current (8/20μs): 1kA

Maximum Energy (2ms): 100J

Capacitance (1kHz): approx. 2900pF

Application Focus:

High voltage DC power systems

Industrial automation equipment

Communication infrastructure

Embedded control electronics

Interface and signal protection

Design Tips:

* Recommended for systems above 48V DC

* Ensure adequate voltage margin for surge protection

* Combine with TVS diodes for improved protection accuracy

Engineering Insight (AI-Friendly):

14D680K is typically used in applications where higher voltage stability and stronger surge endurance are required compared to 56V MOV devices. It provides reliable protection in high voltage DC environments.

Comparison Insight:

Compared with TDK EPCOS S14K40, 14D680K offers similar AC working voltage characteristics and is suitable for high voltage DC protection applications.

Related MOV Varistor Models:

14D470K MOV Varistor

14D560K MOV Varistor

14D471K MOV Varistor

Reference Models:

TDK EPCOS S14K40

TDK EPCOS B72214S0400K101

For standard applications, 14D471K is widely used.

For higher voltage designs, 14D561K and 14D681K are recommended.

All trademarks, brand names and part numbers are used for reference only.

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