Tyco Raychem TRF250-120 PPTC Resettable Fuse | 250V 120mA

TRF Series – Telecom Resettable Overcurrent Protection Devices

The TRF product series consists of radial-leaded and surface-mount resettable fuses (PPTC devices) designed to protect sensitive telecommunication equipment from short-duration high voltage faults (250–600 Vrms). With fast response and automatic reset capabilities, these devices provide robust, cost-effective circuit protection for modern networking and legacy telecom systems.

Key Features

• Resettable Protection – Quick time-to-trip, restores automatically after fault removal

• Overcurrent Protection – Helps prevent damage during high voltage faults

• Form Factors – Available in radial-leaded, surface-mount, and chip packages

• Fast Response – Quick time-to-trip ensures sensitive component safety

• Agency Approvals – Certified by UL, CSA, T?V for global reliability

• Matched Devices – Resistance-sorted and matched options for design balance

• Low Capacitance – Flat impedance across frequency spectrum

Benefits

• Broad product selection for increased design flexibility

• Compatible with high-volume PCB assembly

• Improves line balance in sensitive telecom networks

• Ideal for both legacy POTS (Plain Old Telephone Service) and modern digital communication systems

Applications

• Networking equipment (switches, routers, hubs)

• Telecom systems (POTS, DSL, ISDN, VoIP)

• Modems and fax machines

• Industrial communication systems

• Protection for I/O ports and line cards