TBU-CA085-100-WH-Q

Overview

The TBU-CA085-100-WH-Q is a bidirectional transient blocking unit (TBU) from Bourns, designed for board-mounted surge protection. It features an 850 V voltage rating and a 100 mA current rating. The device utilizes MOSFET semiconductor technology to provide overcurrent and overvoltage protection. It operates within a temperature range of -40°C to +125°C. The component is packaged in a DFN surface-mount format and holds AEC-Q101 automotive qualification.

Feature Summary

• Bidirectional protection capability for AC power cross and short circuit faults
• MOSFET semiconductor technology ensuring low capacitance performance
• Automotive-grade reliability with AEC-Q101 qualification

Applications

• Automotive electronic systems requiring high-speed protection
• AC power interface circuits susceptible to cross faults
• Short circuit protection modules in vehicle networks

Procurement Notes

Verify the specific suffix 'Q' indicates AEC-Q101 automotive qualification status. Confirm the bidirectional nature aligns with AC fault protection requirements. Ensure the DFN package footprint matches the target PCB design constraints. Validate that the 100 mA current rating meets the application's operational limits.

Selection Notes

Select this component when bidirectional protection against AC power cross faults is required. The AEC-Q101 qualification makes it suitable for automotive environments. Consider the low capacitance feature for high-speed signal integrity. Ensure the 850 V rating exceeds the maximum system voltage peaks.

Part Context

This part belongs to the Bourns TBU-CA series of high-speed protectors. These devices utilize proprietary MOSFET technology to block transient energy. The series is designed for robust circuit protection in demanding applications. The CA variant specifically denotes bidirectional functionality for AC line protection scenarios.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.