The B72500T140K60V50 is a ThermoFuse varistor from EPCOS (TDK) designed for overvoltage protection with added thermal protection. This device combines the surge protection capabilities of a varistor with a built-in thermal fuse that disconnects the varistor from the circuit in case of overheating, preventing potential fire hazards.

Applications

• Overvoltage and overcurrent protection in power supplies
• Protection of sensitive electronic components in household appliances
• Surge protection in lighting applications
• Transient voltage suppression in consumer electronics
• Protection of industrial equipment from voltage spikes and thermal runaway

Features

• Integrated ThermoFuse: Provides thermal protection by disconnecting the varistor in case of overheating.
• High surge current capability: Designed to withstand high surge currents, ensuring reliable protection against transient voltages.
• Operating voltage: Suitable for circuits with a specific operating voltage range.
• Leaded construction: Facilitates easy mounting and connection to circuit boards.
• RoHS compliant: Environmentally friendly, meeting the requirements of the RoHS directive.

Benefits

• Enhanced safety: Prevents potential fire hazards by disconnecting the varistor in case of thermal runaway.
• Improved equipment reliability: Protects sensitive electronic components from damage due to voltage surges and thermal events.
• Extended product lifespan: Minimizes the risk of component failure, extending the operational life of the protected equipment.
• Cost-effective surge protection: Offers a reliable and affordable solution for surge and thermal protection.
• Easy to install: The leaded construction simplifies installation and integration into existing circuits.

Additional Details

The B72500T140K60V50 ThermoFuse varistor includes a surge current rating (Imax), clamping voltage (Vc), and energy handling capability (Wmax) specified in the EPCOS (TDK) datasheet. The specific operating temperature and tripping characteristics of the integrated thermal fuse are also detailed in the datasheet. It is constructed with metal oxide ceramic, and the epoxy resin coating confirms to UL 94 V-0. It’s designed to interrupt circuits with voltage ratings of up to 250VAC to prevent fires in overvoltages and withstand currents up to 10,000A.