TBU-CA085-050-WH

Overview

The Bourns TBU-CA085-050-WH is a bidirectional transient voltage suppressor (TVS) diode designed for board-level surge protection. It features a single-diode configuration housed in a compact DFN package measuring 6.5 x 4 x 0.85 mm. The device has a maximum reverse standby voltage of 20V and a peak pulse current rating of 1A. It provides a maximum clamping voltage of 850V, ensuring robust protection against transient surges while maintaining a low profile suitable for space-constrained electronic designs.

Feature Summary

• Bidirectional TVS diode configuration for comprehensive transient protection
• Compact surface-mount DFN package design for efficient board space utilization
• High clamping voltage capability to safeguard sensitive circuitry from overvoltage events

Applications

• Circuit protection for video transcoders
• Surge mitigation in consumer electronics
• Protection against electrostatic discharge and lightning strikes in industrial systems

Procurement Notes

Verify the specific datasheet version and product change notifications prior to procurement. Confirm that the DFN package dimensions and pin configuration align with the target PCB footprint. Ensure compliance with RoHS standards and check for any recent manufacturing site additions or marking changes documented by Bourns to guarantee supply chain consistency and component authenticity.

Selection Notes

Select this component when bidirectional protection is required for low-voltage lines up to 20V. The 1A peak pulse current rating suits applications where moderate surge energy must be absorbed without shunting normal operation entirely. Consider the 850V clamping limit relative to the downstream components' absolute maximum ratings to ensure adequate safety margins during transient events.

Part Context

This part belongs to Bourns' TBU series of high-speed protectors, which are engineered for board-level transient suppression. The series addresses the industry demand for miniaturized circuit protection solutions that integrate seamlessly into modern electronic systems. These devices complement other Bourns offerings like resettable fuses and varistors by providing fast-acting semiconductor-based protection for signal and power lines.

Replacement Considerations

Consult official Bourns documentation for confirmed substitute part numbers. Cross-reference parameters such as standoff voltage, clamping voltage, and package dimensions to ensure functional equivalence. Verify that any alternative component meets the same bidirectional requirement and thermal operating range specifications.