Littelfuse PolySwitch Resettable PPTCs | New Product Brief
This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.
Littelfuse PolySwitch Resettable PPTCs
Littelfuse TSM250 PolySwitch Resettable PPTCs are designed for secondary overcurrent protection in telecom applications.
The TSM250 features two resistance-matched 250V PPTCs in a single surface mount package to reduce board space and improve assembly efficiency. Littelfuse TSM250 PolySwitch PPTCs have low parasitic capacitance and a flat impedance response over frequency for consistent and reliable operation.
The devices provide tip and ring overcurrent protection with a fast time to trip. The PPTCs can handle very high voltage surges and are designed to protect against power cross and power induction surges, aiding compliance with various ITU-T and Telecordia certification requirements.
- Dual 250V resistance-matched PPTCs
- Line balance: 0.5Ω
- Low parasitic capacitance
- Flat impedance versus frequency
- Optimized for tip and ring overcurrent protection
- Fast time to trip: 1.0sec @ 1.0A
- Ratings:
- Voltage withstand: 250V max
- Hold current: 130mA
- Aids compliance with:
- ITU-T K.20, K.21, and K.45
- Telcordia GR-1089 intra-building
New Industry Products are a form of content that allows industry partners to share useful news, messages, and technology with All About Circuits readers in a way editorial content is not well suited to. All New Industry Products are subject to strict editorial guidelines with the intention of offering readers useful news, technical expertise, or stories. The viewpoints and opinions expressed in New Industry Products are those of the partner and not necessarily those of All About Circuits or its writers.
