Transient protection array safeguards xDSL interfaces

9th August 2016
Nat Bowers

Designed to safeguard xDSL interfaces from dangerous transient voltage threats,  a versatile two-line, low-capacitance transient protection array has been announced by Semtech. The TClamp2472S is also suitable for safeguarding broad-based data links serving industrial and communications infrastructure.

The TClamp2472S offers 20A (8x20µs waveform) of surge immunity in an industry-standard SOT-23 package. The dual-line device delivers industry-leading transient protection while also presenting a minimal line-to-line capacitance of less than 3.5pF. Robust (20A, tp=8/20μs) surge rating for high-surge lightning protection helps xDSL equipment makers achieve compliance with the industry’s stringent EMC immunity requirements.

The TClamp2472S represents Semtech’s latest addition to the highly-differentiated TransClamp platform, which offers high-surge immunity with ultra-small junction capacitance. The high-surge, low capacitance advantages are enabled by Semtech’s industry-leading process technology, which achieves extremely low clamping voltage with significant reductions in leakage current and capacitance.

Rick Hansen, Product Marketing Director, Protection Products Group, Semtech, commented: “Higher speed implementations of xDSL continue to proliferate in emerging broadband markets. Low capacitance, efficient clamping transient voltage suppressor TVS devices are increasingly essential for protecting these data circuits. The TClamp2472S offers substantial performance advantages for safeguarding links from the frequent ESD and surge strikes common to these ports.”

The TClamp2472S (order code: TClamp2472S.TCT) is available immediately in production quantities and is priced at $0.28 each in 10,000 unit quantities. Semtech also offers comprehensive design assistance, including field- and factory-based support.

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