Description
The Littelfuse TRF250-120T is a high-reliability PolySwitch PPTC (Polymeric Positive Temperature Coefficient) resettable fuse, specifically designed for telecommunications and networking equipment. Rated for 60V operation, this device offers advanced protection against overcurrent conditions caused by power cross or lightning surges in communication lines.
As a resettable component, the TRF250-120T eliminates the need for manual fuse replacement; it automatically resets to a low-resistance state once the fault condition is cleared and power is cycled. With a compact 6.5mm x 11mm rectangular form factor and 5mm lead spacing, it provides an efficient, space-saving solution for PCB layouts in modems, routers, and high-speed data equipment.
Key Features
- Resettable Technology: PPTC functionality allows the fuse to reset after a trip event, ensuring higher equipment uptime and reduced maintenance.
- Telecom Optimized: Specifically engineered to meet the stringent protection requirements of telecommunications networks and equipment.
- Precision Current Ratings: Features a 120mA (0.12A) holding current and 240mA (0.24A) trip current for accurate, reliable circuit protection.
- Compact Radial Design: The rectangular, radial-leaded package is ideal for high-density printed circuit board (PCB) assemblies.
- Wide Operating Range: Performs consistently across a temperature range of -40°C to +85°C.
Package Includes
- 1 x Littelfuse TRF250-120T PolySwitch PPTC Resettable Fuse (60V)
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | TRF250-120T |
| Fuse Type | PPTC Resettable (PolySwitch) |
| Voltage Rating | 60V DC |
| Holding Current | 120mA (0.12A) |
| Tripping Current | 240mA (0.24A) |
| Lead Spacing | 5mm |
| Operating Temperature | -40°C to +85°C |
| Dimensions | 6.5 x 11 mm |
