The B72580V350K62 is a ThermoFuse varistor from EPCOS (TDK), designed to provide reliable overvoltage protection in various electronic applications. As a part of the ThermoFuse series, it offers enhanced safety by incorporating a thermal fuse in series with the varistor element. This fuse disconnects the varistor from the circuit in the event of a sustained overvoltage or overload condition, preventing potential fire hazards and equipment damage.

Applications

• Power supplies
• Surge protection devices (SPDs)
• Industrial equipment
• Home appliances
• Lighting systems

Features

• ThermoFuse protection for enhanced safety
• High surge current capability (6 kA)
• Operating voltage: 350 Vrms
• UL 1449 recognized
• RoHS compliant
• Leaded construction for easy mounting

Benefits

• Prevents fire hazards due to sustained overvoltage
• Protects sensitive electronic components from damage
• Increases the reliability and lifespan of equipment
• Meets industry safety standards
• Easy to integrate into existing circuits

Technical Specifications

The B72580V350K62 boasts a maximum surge current capability of 6 kA (8/20 µs pulse). The typical capacitance is around 350 pF. The operating temperature range is -40°C to +85°C. The varistor voltage is approximately 560V at 1mA. The clamping voltage at 25A is around 800V. It features a leaded construction for through-hole mounting. The ThermoFuse is designed to activate and disconnect the varistor when the device exceeds a specified temperature or current threshold. The housing material is typically a flame-retardant epoxy resin.