PolySwitch self-resetting devices have been used in the telecommunications and networking industry for over a decade, originally to meet the growing demand for self-resetting overcurrent protection. These product families help to prevent power line transients and power surges defined in the ITU, Telcordia GR1089 and UL60950 standards. PolySwitch devices are available in chip, surface mount and plug-in styles, and help to improve the reliability of customer premises equipment and network equipment.
This leaflet provides specifications, temperature‑derating curves, and application notes for the PolySwitch resettable fuse family. It covers a wide range of part numbers such as TCF250‑120T, TRF250‑080U, and TS250‑130F, describing their rated current, voltage, and interrupt capabilities.
The document also includes safety information, compliance with standards (RoHS, UL, CSA, TUV), and packaging/size details to help designers select the appropriate component for telecommunications, data‑center, and industrial applications. This manual is written in Chinese.
| Rated Current (TCF250‑120T) | 0.186 A |
|---|---|
| Rated Voltage (TCF series) | 250 V |
| Interrupt Current (TRF250‑080U) | 0.124 A |
The TCF250‑120T has a rated current of 0.186 A.
TRF250‑080U can interrupt up to 0.124 A under the listed conditions.