TBU-CA065-500-WH

Overview

Bourns TBU-CA065-500-WH is a bidirectional transient current limiter (TBU) designed for board-level surge protection. It features a DFN surface-mount package with dimensions of 6.5mm length, 4mm width, and 0.85mm height. The device has a maximum reverse standoff voltage of 20V and a clamping voltage of 650V. It supports a peak pulse current of 1A and operates within a temperature range of -55°C to +125°C. The component provides overcurrent and overvoltage protection in a compact form factor suitable for high-density circuit designs.

Feature Summary

• Provides bidirectional protection against both overcurrent and overvoltage transients
• Features automatic recovery capability after fault conditions without permanent damage
• Utilizes a compact DFN surface-mount package for efficient PCB space utilization

Applications

• Protection for communication interface circuits
• Surge suppression in industrial control systems
• Transient protection for power supply modules

Procurement Notes

Verify the specific suffix WH indicates the tape and reel packaging configuration as listed in distributor catalogs. Confirm RoHS compliance status directly from the manufacturer datasheet prior to integration. Ensure the ordering part number matches the exact electrical ratings required for the target application circuit design.

Selection Notes

Select this component when bidirectional surge protection is required for low-voltage signal or power lines. The 20V standoff voltage limits suitability to applications operating below this threshold. Consider the 1A peak pulse current rating against expected transient energy levels. The DFN package is appropriate for automated surface-mount assembly processes requiring small footprints.

Part Context

This device belongs to the Bourns TBU series of transient current limiters. These components function as resettable fuses that also suppress voltage spikes. They are engineered to replace traditional fuse and TVS diode combinations by offering combined current limiting and voltage clamping in a single surface-mount package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Bourns selection guides or authorized distributors for equivalent products with matching electrical specifications and package dimensions.