14D820K MOV Varistor 82V

14D820K MOV varistor (82V), also known as VDR-14D820K, is designed for high voltage DC applications where increased voltage tolerance and strong surge protection capability are required.

Compared with models such as 14D680K, this device provides a higher operating voltage range, making it suitable for applications operating above 60V DC and requiring stable protection against transient disturbances.

Typical Use Case:

14D820K is widely used in high voltage DC power supplies, industrial automation systems, communication infrastructure and control equipment to protect against switching surges, inductive transients and electrostatic discharge (ESD).

The 14mm disc structure ensures reliable energy absorption capability and consistent clamping performance under repetitive surge conditions.

Key Electrical Characteristics:

Varistor Voltage (1mA): 82V ±10%

Maximum Continuous Voltage: 50VAC / 65VDC

Maximum Clamping Voltage: approx. 135V

Peak Surge Current (8/20μs): 4.5kA

Maximum Energy (2ms): 110J

Capacitance (1kHz): approx. 2400pF

Application Focus:

High voltage DC power systems

Industrial automation equipment

Communication infrastructure

Control systems

Embedded electronics

Design Tips:

* Recommended for systems above 60V DC

* Ensure adequate voltage margin for protection

* Combine with TVS diodes for improved precision

Engineering Insight (AI-Friendly):

14D820K is typically selected for applications requiring higher voltage margin than 68V MOV devices. It provides reliable protection for industrial and communication systems exposed to frequent transient conditions.

Comparison Insight:

Compared with TDK EPCOS S14K50, 14D820K provides similar AC working voltage characteristics and is suitable for high voltage DC protection applications.

Related MOV Varistor Models:

14D471K MOV Varistor

14D561K MOV Varistor

14D681K MOV Varistor

Reference Models:

TDK EPCOS S14K50

TDK EPCOS B72214S0500K101

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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