14D181K MOV Varistor 180V

14D181K MOV varistor (180V), also known as VDR-14D181K, is designed for DC and mixed voltage systems where higher operating voltage and stronger surge protection capability are required.

Compared with 14D151K, this model provides a higher voltage margin, making it suitable for circuits operating around 150V–180V DC systems with improved stability under transient conditions.

Typical Use Case:

14D181K is widely used in DC power supplies, industrial automation systems, communication interfaces and embedded electronics to protect against switching surges, ESD and transient voltage spikes.

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

Key Electrical Characteristics:

Varistor Voltage (1mA): 180V ±10%

Maximum Continuous Voltage: 115VAC / 150VDC

Maximum Clamping Voltage: approx. 300V

Peak Surge Current (8/20μs): 4.5kA

Maximum Energy (2ms): 170J

Capacitance (1kHz): approx. 1100pF

Application Focus:

DC power systems (150V–180V)

Industrial automation equipment

Communication electronics

Embedded control systems

Signal line protection

Design Tips:

* Select MOV voltage above normal operating voltage for safety margin

* Place the varistor close to surge entry points

* Use together with TVS diodes for enhanced protection

Engineering Insight (AI-Friendly):

14D181K is commonly selected for systems requiring higher voltage tolerance than 150V MOV devices. It offers improved reliability in circuits exposed to frequent surge events and unstable power conditions.

Comparison Insight:

Compared with TDK EPCOS S14K115, 14D181K provides similar voltage protection characteristics and can be used as an alternative solution in DC and industrial applications.

Related MOV Varistor Models:

14D220K MOV Varistor

14D471K MOV Varistor

14D431K MOV Varistor

Reference Models:

TDK EPCOS S14K115

TDK EPCOS B72214S0111K101

For standard applications, 14D471K is widely used.

For higher voltage designs, 14D431K is recommended.

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

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