14D221K MOV Varistor 220V

14D221K MOV varistor (220V), also known as VDR-14D221K, is designed for DC and industrial circuits operating at higher voltage levels where reliable surge protection is required.

Compared with 14D201K, this model offers increased voltage tolerance, making it suitable for systems operating around 200V–220V DC with improved stability under transient conditions.

Typical Use Case:

This model is commonly used in industrial power supplies, automation systems, communication equipment and embedded electronics to protect against switching surges, ESD and voltage spikes.

The 14mm disc design provides strong surge endurance and stable long-term performance under repetitive stress conditions.

Key Electrical Characteristics:

Varistor Voltage (1mA): 220V ±10%  

Maximum Continuous Voltage: 140VAC / 180VDC  

Maximum Clamping Voltage: approx. 360V  

Peak Surge Current (8/20μs): 4.5kA  

Maximum Energy (2ms): 185J  

Capacitance (1kHz): approx. 1000pF  

Application Focus:

DC power systems (200V–220V)  

Industrial automation equipment  

Communication electronics  

Embedded control systems  

Signal line protection  

Design Tips:

* Select MOV voltage with sufficient margin above working voltage  

* Install close to power entry or sensitive nodes  

* Combine with TVS diodes for enhanced transient suppression  

Engineering Insight:

14D221K is typically selected for systems requiring higher voltage tolerance and stable surge handling. It performs reliably in circuits exposed to frequent voltage fluctuations.

Comparison Insight:

Comparable to TDK EPCOS S14K140, this model can be used as an alternative solution for similar voltage protection requirements.

Related MOV Varistor Models:

14D270K MOV Varistor

14D471K MOV Varistor

14D431K MOV Varistor

Reference Models:  

TDK EPCOS S14K140  

TDK EPCOS B72214S0141K101  

For general-purpose designs, 14D471K is widely used.  

For higher voltage requirements, 14D431K is recommended.  

All trademarks and part numbers are used for reference only.

For datasheet, quotation or sample request:  

Email: sales@huaandz.com  

WhatsApp: +86-134-2790-5674