Littelfuse TMOV20RP625M

Littelfuse TMOV and iTMOV thermally protected varistors represent a new development in integrated circuit protection. Both versions consist of radial-lead metal oxide varistors with an integrated thermally activated element designed to disconnect when overheating occurs due to abnormal overvoltage or current-limiting conditions as outlined in UL1449. The integrated thermal element of the TMOV and iTMOV varistors, combined with appropriate housing design, helps surge protective device modules comply with UL1449 for cord-connected and permanently connected applications. The TMOV and iTMOV varistors provide fast thermal response due to the integrated thermal element being in close proximity to the varistor body. The integrated configuration also offers lower inductance than most discrete solutions, improving clamping performance against fast overvoltage transients. The iTMOV varistor differs from the TMOV varistor by incorporating a third lead for indicating that the varistor has been disconnected from the circuit. This lead facilitates connection to a monitoring circuit. In addition, TMOV and iTMOV varistors are wave solderable, simplifying final product assembly and reducing costs and rework associated with hand-soldering operations.

• RoHS compliant, with halogen-free and lead-free options
• Designed to facilitate UL1449 compliance for surge protective device products
• High peak surge current rating up to 10kA
• Wave solderable
• Standard lead form and spacing options available
• Operating temperature range -55°C to +85°C
• Three-lead version available for indication purposes

• Surge protector products
• AC line power supplies
• Uninterruptible power supplies
• Home appliances
• Inverters