Bourns has introduced the CDSOD323-TxxC-Q Series, an automotive-grade transient voltage suppressor (TVS) diode designed to protect single data lines or I/O ports from ESD and surge events. The series combines bidirectional protection with low typical capacitance in a compact JEDEC SOD-323 package to support high-speed signal integrity in space-constrained designs.
As electronic systems continue to shrink while incorporating higher-speed interfaces, designers face increased risk from ESD, EFT, and surge transients without sacrificing board space or signal performance. Automotive applications add further qualification requirements, including AEC-Q compliance and extended temperature operation. The CDSOD323-TxxC-Q Series addresses these constraints by providing up to 30 kV ESD protection with low parasitic capacitance in a package suitable for dense PCB layouts.
“Designers working on compact automotive and portable electronics platforms need circuit protection that meets qualification requirements without compromising signal integrity or board space,” said Rollin Roos, Product Line Manager, Circuit Protection Products, Bourns. “The CDSOD323-TxxC-Q Series combines bidirectional transient protection, low typical capacitance, and AEC-Q101 qualification in a JEDEC SOD-323 package to support space-constrained signal-line designs.”
Design Features and Key Capabilities
- Bidirectional TVS configuration — Protects against both positive and negative transient events on a single line or I/O port
- High ESD withstand capability — Rated for ESD protection up to 30 kV per IEC 61000-4-2
- Low typical capacitance — Approximately 3 pF to help maintain signal integrity on high-speed interfaces
- Compact SOD-323 package — Supports space-limited PCB designs and standard pick-and-place assembly
- Automotive qualification — AEC-Q101 compliant devices for higher-reliability environments
- MLV replacement option — Designed to replace larger 0805 multilayer varistor devices
- Environmental compliance — RoHS compliant per Bourns definitions
Applications
- Cellular phones
- PDAs and notebooks
- Digital cameras
- MP3 players and GPS
- USB interfaces
- Automotive
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