TBU-CA050-050-WH

Overview

The Bourns TBU-CA050-050-WH is a bidirectional board-mounted surge protector belonging to the TBU high-speed protector family. It functions as a solid-state circuit breaker designed to safeguard sensitive electronics against overcurrent and short-circuit conditions. The device utilizes silicon technology to provide rapid response times, making it suitable for high-speed data lines. It operates within a specified temperature range and is housed in a compact surface-mount package.

Feature Summary

• Bidirectional protection capability for differential signal lines
• Solid-state construction replacing traditional fuses
• High-speed response to transient events

Applications

• RS-485 interface protection
• RS-422 interface protection
• General high-speed data line surge suppression

Procurement Notes

Verify the specific part number suffix against the manufacturer's current datasheet to ensure correct pinout and packaging configuration. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to ordering. Ensure the selected component matches the required voltage and current ratings for the target application circuit.

Selection Notes

Select this component when bidirectional surge protection is required for differential communication protocols. Evaluate the maximum operating voltage and hold current requirements of the system to ensure compatibility. Consider the thermal management capabilities of the PCB layout, as the device dissipates energy during fault conditions. Verify that the package size fits the available footprint on the design.

Part Context

This component is part of Bourns' TBU (Transient Breaker Unit) series, which offers high-speed circuit protection solutions. These devices are engineered to replace traditional fusible links in applications requiring fast reset capabilities and precise trip characteristics. The series is widely used in industrial and telecommunications equipment to protect communication interfaces from electrical overstress.

Replacement Considerations

Consult official substitution lists for equivalent models within the TBU series. Verify that any alternative part maintains identical bidirectional functionality and package dimensions. Cross-reference electrical parameters such as holding current and trip threshold to ensure circuit compatibility.