Bourns Introduces Automotive-Grade TVS Diode for High-Speed Signal Protection

Bourns has introduced the CDSOD323-T24LC-Q, an automotive-grade bidirectional transient voltage suppressor (TVS) diode designed to protect high-speed signal lines from electrostatic discharge (ESD) and surge events. The device combines 30 kV ESD protection with a typical capacitance of 1.0 pF in a compact SOD-323 surface-mount package and is qualified to AEC-Q101 for automotive applications.

According to Bourns, the CDSOD323-T24LC-Q has been developed for applications where increasing signal density and limited PCB space make it difficult to add transient protection without affecting signal integrity. The device supports a working peak voltage of 24 V and is intended for protecting individual high-speed signal lines.

Low-Capacitance Protection for High-Speed Interfaces

The CDSOD323-T24LC-Q is designed to provide bidirectional ESD and surge protection while minimizing capacitive loading on the protected signal line.

Bourns say the diode offers a typical junction capacitance of 1.0 pF together with a peak pulse power rating of 350 W using the standard 8/20 μs waveform. The device has a minimum breakdown voltage of 26.7 V at 1 mA and is specified for operation across a junction temperature range of -55°C to +150°C. The company also says these characteristics allow the device to protect high-speed interfaces without significantly affecting signal performance.

Automotive and Portable Electronics Applications

Bourns are positioning the CDSOD323-T24LC-Q for automotive and portable electronic systems where high-speed interfaces require ESD protection in space-constrained designs. Typical applications include HDMI 1.4 interfaces, Digital Visual Interface (DVI), USB 3.0 and USB On-The-Go (OTG) ports, together with memory card and SIM card protection.

The CDSOD323-T24LC-Q is available now through Bourns' authorized distribution network.

Learn more and read the original announcement at Bourns' website.

Technology Overview

The Bourns CDSOD323-T24LC-Q is an AEC-Q101 qualified bidirectional TVS diode designed to protect high-speed signal lines from ESD and surge events. The device combines a 24 V working peak voltage, 30 kV ESD protection, and 1.0 pF typical capacitance in a compact SOD-323 package for automotive and portable electronics.

Frequently Asked Questions

What is the CDSOD323-T24LC-Q?

The CDSOD323-T24LC-Q is an automotive-grade bidirectional TVS diode designed to protect individual high-speed signal lines from electrostatic discharge and surge events.

What interfaces is the device intended to protect?

According to Bourns, the diode is suitable for HDMI 1.4, DVI, USB 3.0, USB OTG, memory card, and SIM card interfaces.

Why is the low capacitance important?

The device has a typical capacitance of 1.0 pF, which helps provide transient protection while minimizing the impact on high-speed signal integrity.