Metal Oxide Varistors (MOVs) – JVR Series

Wide voltage range: The JVR series provides a range of operating voltages, making them suitable for various industrial and consumer electronic applications.
High surge capability: They offer high surge protection, effectively absorbing excess energy from transient voltage events.
Common construction: JVR varistors typically have a radial-leaded, epoxy-coated disc construction designed for through-hole mounting on printed circuit boards.
Specific ratings: JVR parts come with specific ratings for voltage, surge current, and energy absorption, which can be found in the manufacturer’s datasheet. For example, a “JVR10N391K” specifies the disc diameter (10mm) and the varistor voltage (390V).

Metal Oxide Varistors (MOVs) are voltage-dependent resistors primarily used for surge protection in electronics, clamping harmful voltage spikes in home appliances (TVs, refrigerators), industrial controls, telecommunications (routers), automotive systems, and power supplies to safeguard sensitive components like transistors and microcontrollers from damage. They function as a safety valve, diverting excess energy during transients caused by lightning or switching, preventing equipment failure, and ensuring reliable operation.

Applications:

Consumer Electronics: Protecting TVs, computers, audio systems, microwaves, washing machines, and refrigerators from power surges.
Power Supplies & Adapters: Found in surge protectors, power strips, and mains-connected supplies to clamp transients.
Industrial Equipment: Safeguarding AC/DC lines, protecting motor controls, transistors, MOSFETs, and thyristors from switching noise and surges.
Telecommunications: Shielding network equipment (modems, switches) and phone lines from lightning and transient disturbances.
Automotive Electronics: Protecting vehicle systems from ignition noise and external spikes.
Data Systems: Ensuring data integrity and preventing storage/processing failures from voltage spikes.