TBU-CA050-500-WH

Overview

The Bourns TBU-CA050-500-WH is a board-mounted surge protector classified as a bidirectional TBU (Transient Break-Under) device. It operates with a voltage rating of 500 V and a current rating of 1 A. The component supports surface mount technology in a DFN package. It functions within a minimum operating temperature of -55 °C and a maximum operating temperature of +125 °C. The device provides overcurrent and overvoltage protection capabilities.

Feature Summary

• Provides bidirectional transient break-under protection for circuit integrity
• Acts as a solid-state resettable barrier against surge events
• Delivers simultaneous overcurrent and overvoltage suppression

Applications

• Protection against lightning-induced surges
• Defense against power line induction transients
• Mitigation of ground potential rise (EPR) events
• Shielding against power cross conditions

Procurement Notes

Verify the specific part number suffix against official Bourns documentation to confirm exact electrical characteristics and compliance status. Ensure the procurement channel sources genuine components directly from authorized distributors or the manufacturer to guarantee authenticity and traceability. Cross-reference the datasheet revision date with production requirements to avoid obsolete specifications.

Selection Notes

Select this component when designing circuits requiring robust, bidirectional surge protection rated for 500 V systems. The 1 A current rating defines the operational limit for normal conduction before triggering protection. Consider the DFN package dimensions for PCB layout constraints and verify thermal management requirements given the -55 °C to +125 °C operating range.

Part Context

This device belongs to the Bourns TBU-CA series of High-Speed Protectors (HSP). These are silicon-based solid-state current limiters designed to block transient currents while providing voltage isolation. The CA series specifically offers multiple pulse voltage and trigger current options for diverse industrial applications.

Replacement Considerations

Check the TBU-CA040-500-WH for lower voltage ratings or TBU-CA065-500-WH for higher voltage ratings within the same series. Verify pin compatibility and package dimensions before substituting any alternative part numbers.