TBU-CA085-500-WH

Overview

The Bourns TBU-CA085-500-WH is a bidirectional transient voltage suppressor diode designed for board-level surge protection. It features a maximum clamping voltage of 850V and a peak pulse current rating of 1A. The device operates within a reverse standby voltage range up to 20V and is housed in a compact DFN package measuring 6.5mm by 4mm with a height of 0.85mm. It supports surface mount installation and functions reliably across an operating temperature range from -55°C to +125°C.

Feature Summary

• Provides bidirectional protection against overcurrent and overvoltage transients
• Offers robust clamping capabilities for sensitive electronic circuits
• Utilizes a low-profile surface mount package for space-constrained designs

Applications

• Circuit protection for video transcoders
• Protection against electrostatic discharge events
• Mitigation of lightning strike induced surges
• Defense against noise from dirty power sources

Procurement Notes

Verify the specific datasheet version when sourcing, as component specifications may undergo revisions. Confirm that the DFN package dimensions align with your PCB footprint requirements. Ensure the selected variant meets all necessary regulatory compliance standards for your target market. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability of the components.

Selection Notes

Select this component when bidirectional transient suppression is required for single-channel applications. The 850V clamping voltage makes it suitable for protecting circuits exposed to high-energy surges. Consider the 1A peak pulse current rating to ensure adequate protection levels for the specific load. The wide operating temperature range supports deployment in harsh industrial or automotive environments where thermal stability is critical.

Part Context

This component belongs to Bourns' TBU series of board-level surge protectors. These devices are engineered to prevent or mitigate damaging transient surges, overcurrent, and overvoltage conditions. Unlike traditional shunt protection methods, these components can bring inputs to safe levels while maintaining circuit integrity during fault events.

Replacement Considerations

Consult official Bourns documentation for verified substitute part numbers. Ensure any replacement maintains identical bidirectional characteristics and compatible package dimensions. Verify that alternative components meet the same electrical ratings for clamping voltage and peak pulse current.