TBU-CA065-050-WH

Overview

The Bourns TBU-CA065-050-WH is a bidirectional Transient Blocker Unit (TBU) designed as a solid-state, silicon-based current limiter. It provides surge protection against lightning, power induction, ground potential rise, and other energy surges by acting as a series barrier that blocks transient currents while maintaining voltage isolation. This device is resettable and integrates with other overvoltage products for comprehensive circuit defense.

Feature Summary

• Solid-state silicon construction enabling rapid response to transient events
• Bidirectional operation suitable for protecting sensitive communication lines
• Self-resetting functionality eliminates the need for manual replacement after surge events

Applications

• RS-485 port protection
• RS-422 interface protection
• Communication line surge suppression

Procurement Notes

Verify the specific suffix WH against the manufacturer datasheet to confirm package type and compliance status. Ensure the selected variant matches the required pulse voltage and trigger current specifications for the target application. Confirm RoHS compliance through official documentation before integration into regulated designs.

Selection Notes

Select this component when high-speed protection is required for differential data lines. The bidirectional nature makes it ideal for applications where polarity may reverse or undefined states exist. Evaluate the thermal management requirements based on the expected frequency of surge events to ensure long-term reliability in the intended operating environment.

Part Context

This part belongs to the TBU-CA series, which offers multiple pulse voltage and trigger current options within the Bourns TBU family. The TBU technology serves as an effective barrier against transient currents, complementing traditional varistors and gas discharge tubes by providing faster response times and precise clamping characteristics for modern electronic circuits.

Replacement Considerations

Consult the official Bourns TBU selection guide for direct substitutes within the CA series. Verify that any alternative maintains identical bidirectional capabilities and trigger thresholds to ensure equivalent circuit protection performance without redesigning the surrounding components.