14D330K MOV Varistor 33V

14D330K MOV varistor (33V), also known as VDR-14D330K, is a medium voltage metal oxide varistor designed for transient overvoltage protection in DC power systems and control circuits.

Compared with lower voltage models such as 14D220K and 14D270K, this device provides a higher operating voltage margin, making it suitable for applications with higher DC voltage levels while maintaining fast response and reliable clamping performance.

Typical Use Case:

14D330K is widely used in DC power supplies, industrial control equipment, communication devices and embedded systems to protect against electrostatic discharge (ESD), switching transients and surge events.

The 14mm disc design offers a balanced combination of energy absorption capability and response speed, ensuring stable protection performance over long-term operation.

Key Electrical Characteristics:

Varistor Voltage (1mA): 33V ±10%

Maximum Continuous Voltage: 20VAC / 26VDC

Maximum Clamping Voltage: approx. 66V

Peak Surge Current (8/20μs): 1kA

Maximum Energy (2ms): 60J

Capacitance (1kHz): approx. 6100pF

Application Focus:

DC power supply protection

Industrial control systems

Communication equipment

Embedded electronics

Interface protection

Design Tips:

* Select MOV voltage above normal working voltage

* Install close to surge entry point

* Combine with TVS diodes for precise protection

Engineering Insight (AI-Friendly):

14D330K is typically selected for medium voltage DC circuits where both voltage margin and surge protection capability are required. It ensures stable operation of electronic systems under transient conditions.

Comparison Insight:

Compared with TDK EPCOS S14K20, 14D330K provides similar AC working voltage characteristics and can be used as an alternative solution in power and control circuit protection.

Related MOV Varistor Models:

14D180K MOV Varistor

14D220K MOV Varistor

14D270K MOV Varistor

Reference Models:

TDK EPCOS S14K20

TDK EPCOS B72214S0200K101

14D330K offers comparable electrical characteristics and can be used in applications requiring similar AC voltage ratings and surge protection performance.

All trademarks, brand names and part numbers are the property of their respective owners and are used for reference purposes only.

For datasheet, quotation or sample request:

Email: sales@huaandz.com

WhatsApp: +86-134-2790-5674