Littelfuse TMOV20RP510E

Littelfuse's TMOV® and iTMOV® thermally protected varistors represent a new development in integrated circuit protection. Both versions consist of radial-lead metal oxide varistors (MOVs) with an integrated thermally activated element designed to disconnect when overheating occurs due to abnormal overvoltage, current limiting, or other conditions specified by UL1449. The integrated thermal element in TMOV® and iTMOV® varistors, combined with appropriate enclosure design, helps SPD modules meet UL1449 requirements for both cord-connected and permanently connected applications. Due to the close proximity of the integrated thermal element to the MOV body, TMOV® and iTMOV® varistors offer fast thermal response. The integrated configuration also provides lower inductance than most discrete solutions, improving clamping performance against fast overvoltage transients. The iTMOV® varistor differs from the TMOV® varistor in that it includes a third lead for indicating that the MOV has been disconnected from the circuit. This lead facilitates connection to monitoring circuitry. In addition, TMOV® and iTMOV® varistors are wave-solderable, simplifying final product assembly by reducing costs and rework associated with hand-soldering operations.

• RoHS compliant; halogen-free and lead-free options available
• Designed to facilitate SPD products meeting UL1449 standards
• High surge current peak rating up to 10kA
• Wave solderable
• Standard lead form and pitch options available
• Operating temperature range: -55°C to +85°C
• Three-lead version available for indication purposes

• SPD Products
• AC Panel Protection Module
• AC Power Supply
• Surge Protection Strip Connector
• AC Power Meter