24V TVS diode safeguards automotive antennas from ESD

Engineered to protect automotive antennas from ESD, a single-line TVS (Transient Voltage Suppression) device has been released by Semtech. The RClamp2431TQ, part of Semtech’s AEC-Q100 protection platform, offers a unique combination of low-clamping ESD protection with an ultra-low capacitance rating, making it suited for safeguarding car antennas against the harsh electrical transient threats present in vehicles.

The ultra-low capacitance of the RClamp2431TQ enables it to operate on high bandwidth antennas without compromising the signal integrity of the RF link. With a 24V working voltage, this device is well-suited for safeguarding emerging applications like NFC antennas. The RClamp2431TQ offers transient protection for high-speed signal lines according to IEC 61000-4-2 (ESD), a 24V working voltage protection for one I/O line and low capacitance of 0.35pF line-to-line.

In addition to low-capacitance, RF links require a high working voltage TVS with sufficient low ESD clamping voltage performance. When compared to existing standard polymer devices, the RClamp2431TQ achieves as much as a 40% reduction in ESD peak clamping voltage.

Rick Hansen, Product Marketing Director, Protection Product Group, Semtech, commented: “The newest vehicles coming off today’s assembly lines are equipped with more advanced wireless communications antennas – from GPS to Bluetooth to V2V and NFC. The RClamp2431TQ provides significant clamping voltage advantages over traditional polymer-based devices while also presenting sufficiently low capacitance on the RF signal path. We are very pleased with the way the market has already adopted this RClamp2431TQ protection solution.”

Supplied in an ultra-small package size measuring 1.0×0.6mm, the RClamp2431TQ (order code: RClamp2431TQTCT) is available immediately in production quantities and is priced at $0.33 each in 10,000 unit quantities.

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