Latest RailClamp TVS array delivers lightning immunity to GR-1089 requirements

Latest RailClamp® TVS array delivers lightning immunity to GR-1089 requirements

The Rclamp2502L is latest device in Semtech’s RailClamp® family of low capacitance TVS arrays designed to protect high speed data interfaces.

The device protects sensitive components connected to high-speed data and transmission lines from over-voltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and lightning strikes in accordance with  IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact), C 61000-4-4 (EFT) 40A (5/50ns) and IEC 61000-4-5 (Lightning) 24A (1.2/50μs) electrostatic discharge immunity tests.

The RClamp®2502L is constructed using Semtech’s proprietary EPD process technology. The EPD process provides low stand-off voltages with significant reductions in leakage current and capacitance over silicon avalanche diode processes. The device features a true operating voltage of 2.5 volts for superior protection. Other key features include a low <5pF (Line-to-Line) capacitance and a high surge capability of 40A (tp=8/20μs).

The unique design Rclamp2502L incorporates surge rated, low capacitance steering diodes and a TVS diode in a single package. During transient conditions, the steering diodes direct the transient current away from the protected IC. The internal TVS diode clamps the transient voltage to a safe level. The low capacitance array configuration allows the user to protect up to two high-speed data lines.

The combination of low clamping voltage, high surge capability, and low loading capacitance makes the RClamp2502L an ideal solution for protecting GbE systems to the lightning immunity requirements of GR-1089.

The RClamp2502L is shipped in a JEDEC 8-pin Pb-Free, Halogen Free, RoHS/WEEE compliant SOIC package. The leads are finished with lead-free matte tin.