TBU-CA025-050-WH

Overview

The Bourns TBU-CA025-050-WH is a bidirectional transient current suppressor designed for circuit protection. It features a maximum reverse standoff voltage of 20V and a clamping voltage of 250V. The device supports a peak pulse current of 1A and operates within a temperature range of -55°C to +125°C. Packaged in a DFN surface-mount format with dimensions of 6.5mm length, 4mm width, and 0.85mm height, it provides robust ESD protection for sensitive electronics.

Feature Summary

• Bidirectional surge suppression capability
• ESD protection functionality
• Surface-mount DFN package design

Applications

• RS-485 interface protection
• RS-422 interface protection
• General circuit board surge suppression

Procurement Notes

Verify the specific datasheet version and component marking against official Bourns documentation before procurement. Confirm that the DFN package dimensions and pin configuration match the target PCB footprint requirements. Ensure compliance with RoHS standards and check for any recent product change notifications regarding manufacturing sites or assembly locations to guarantee supply chain consistency.

Selection Notes

Select this component when bidirectional protection is required for low-voltage signal lines. The 20V standoff voltage suits applications where operating voltages remain below this threshold. Consider the 1A peak pulse current rating relative to expected surge events. The compact DFN form factor is suitable for space-constrained designs requiring reliable transient suppression without significant board area consumption.

Part Context

This part belongs to the Bourns TBU series of high-speed protectors. These devices are engineered to provide superior transient current suppression compared to traditional TVS diodes. The series is widely utilized in telecommunications and industrial applications where fast response times and high reliability are critical for maintaining signal integrity during electrical disturbances.

Replacement Considerations

Consult official Bourns substitution guides for verified alternatives. Cross-reference parameters such as clamping voltage, standoff voltage, and package dimensions to ensure functional equivalence. Do not assume generic TVS diodes are direct substitutes due to potential differences in surge handling capabilities and response characteristics.