Littelfuse TSM250 PolySwitch® Resettable PPTCs
Littelfuse TSM250 PolySwitch® Resettable PPTCs feature two 250V Telecom PPTCs in a single plastic housing to provide tip and ring overcurrent protection and aid compliance with ITU-T K.20, K.21, and K.45 as well as Telcordia GR-1089 intra-building. These surface-mount devices protect against damage caused by power cross and power induction surges with fast time to trip. Littelfuse TSM250 PolySwitch PPTCs are ideal for secondary overcurrent protection in customer premise equipment (CPE), central office (CO), and subscriber line interface cards (SLIC).
Telecom and network equipment designers seek to conserve board space and comply with standards for reliability. TSM250-130 combines two resistance-matched 250V PPTCs in a single surface-mount housing, reducing board space by 50%, simplifying assembly, and offering Tip and Ring resistance balance.
Features
- Two PPTCs in a single plastic housing
- Reduces PCB area by 50%
- Surface mount
- Resettable overcurrent protection
- Fast time to trip
- Resistance sorted and matched devices available
- Low parasitic capacitance / flat impedance with frequency
- Aids compliance with ITU-T K.20, K.21, and K.45 as well as Telcordia GR-1089 intra-building
- Recognized to UL 1434
- Approved to CSA TIL No. CA-3A and EN 60730-1
- RoHS compliant
Applications
- Secondary overcurrent protection
- CPE
- CO
- SLIC
Related PTCs
Littelfuse PolySwitch Telecommunication Resettable PTCs
Designed to protect against short duration high-voltage fault currents.
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Publicado: 2019-08-23
| Actualizado: 2023-05-11