TBU-CA025-100-WH

Overview

The Bourns TBU-CA025-100-WH is a single, bidirectional high-speed protection component from the TBU series. It utilizes MOSFET semiconductor construction to provide integrated overcurrent and overvoltage protection in a compact DFN package. The device features a maximum reverse standoff voltage of 20V and a clamping voltage of 250V. It supports a peak pulse current of 1A and operates within a temperature range of -55°C to +125°C. Designed for surface mount installation, it offers low capacitance characteristics suitable for high-speed data lines.

Feature Summary

• Integrated overcurrent and overvoltage protection using MOSFET technology
• Bidirectional configuration for balanced line protection
• Low capacitance design for high-speed signal integrity
• Compact DFN surface-mount package

Applications

• Voice and VDSL card protection
• RS-485 and RS-422 interface protection
• Ethernet port surge suppression

Procurement Notes

Verify the specific suffix 'WH' against the manufacturer's latest datasheet to confirm pinout and marking details. Ensure the selected variant matches the required voltage and current ratings for the target application circuit. Cross-reference with authorized distributors to confirm availability and authenticity of the Bourns component.

Selection Notes

Select this component when bidirectional protection is required for low-voltage, high-speed data lines. The 20V standoff voltage suits applications with nominal operating voltages below this threshold. Consider the 1A peak pulse current capability for expected surge environments. The DFN package is appropriate for space-constrained PCB layouts requiring surface mount assembly.

Part Context

This part belongs to the Bourns TBU-CA series of board-mount surge protectors. These devices combine transient voltage suppression with current limiting functions. The series is designed to replace traditional discrete TVS diodes and fuses, offering a simplified solution for protecting sensitive electronics from electrical overstress events.

Replacement Considerations

Check for TBU-CA025-100-WH-Q if automotive qualification is required. Verify equivalent parts from other manufacturers only if they match the bidirectional configuration, 20V standoff, and DFN package dimensions.