Littelfuse Dual channel PPTC protects Telecom Equipment

Littelfuse has recently announced a new series of 250V Telecom PPTCs designed to help make telecom and network equipment more reliable.

The TSM250-130 series protects against power cross and induced power surges as defined in ITU, Telcordia GR1089 and IEC 62368-1. Because it combines two resistance-matched PPTCs in a single surface-mount housing, it reduces the board space required by 50%, simplifies assembly, and offers Tip and Ring resistance balance.

TSM250-130 Series PPTC

Part of the Littelfuse PolySwitch family of resettable overcurrent protection devices for telecommunications and networking equipment, the new series is ideal for:

• Customer Premise Equipment (CPE)
• Central Office (CO) equipment
• Subscriber Line Interface Cards (SLIC)
• VoIP port on set top boxes

“Featuring two resistance-matched PPTCs in a single surface-mount housing, the TSM250-130 Series delivers Tip and Ring overcurrent protection while using 50% less PCB area,” said Stephen Li, Global Product Manager at Littelfuse. “With its high surge capability, it helps end users comply with ITU-T K.20, K.21 and K.45 as well as Telcordia GR-1089 intra-building standards.”

The TSM250-130 Series PPTCs offer these key benefits:

• Two 250V PPTCs in single housing reduces PCB area by 50%.
• Resistance matched PPTCs offer Tip and Ring resistance balance.
• Very high voltage surge capability aids compliance with industry certification.

Availability
The TSM250-130 Series PPTCs are available in tape and reel format in quantities of 3,000. Sample requests may be placed through authorized Littelfuse distributors worldwide.

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