TBU-CA040-100-WH

Overview

The Bourns TBU-CA040-100-WH is a bi-directional board-mounted surge protector classified as a High-Speed Protector (HSP). It functions as an electronically controlled latch (ECL) based on silicon technology, providing overcurrent and overvoltage protection. The device operates within a voltage rating of 400 V and a current rating of 1 A. It supports surface mount installation in a DFN package and maintains functionality across a temperature range of -55 °C to +125 °C.

Feature Summary

• Provides bidirectional surge protection against transient currents
• Acts as a solid-state resettable barrier blocking instantaneous energy
• Offers voltage isolation during fault conditions

Applications

• Protection against lightning-induced surges
• Mitigation of ground potential rise (EPR) events
• Defense against power cross and induced power surges

Procurement Notes

Verify the specific datasheet for the TBU-CA040-100-WH variant, as distributor listings may contain conflicting descriptions such as RF switch specifications. Confirm that the component matches the High-Speed Protector (HSP) category rather than signal switching ICs. Ensure the ordering suffix corresponds to the correct packaging configuration required for your assembly process.

Selection Notes

Select this component when circuit protection requires rapid response to high-energy transients without permanent damage. The bidirectional nature allows use in AC or bipolar DC lines. Verify that the 400 V rating and 1 A holding current align with the system's normal operating parameters and maximum surge expectations before integration.

Part Context

This part belongs to the Bourns TBU-CA series of High-Speed Protectors. This family utilizes silicon-based electronic controlled latch technology to replace traditional fuses or varistors in sensitive applications. The CA series specifically offers multiple pulse voltage and trigger current options for diverse industrial and automotive environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Bourns engineering for direct equivalents if the TBU-CA040-100-WH is unavailable.