TBU-DT085-200-WH

Overview

The Bourns TBU-DT085-200-WH is a dual unidirectional board mount surge protector from the TBU-DT series. It features an 850 V voltage rating and a 200 mA current rating. The device utilizes SMD/SMT termination within a DFN package, suitable for PCB mounting. Operating temperature ranges from -40 °C to +125 °C. It provides overcurrent and overvoltage protection specifically designed for Ethernet ports, protection modules, dongles, and test equipment.

Feature Summary

• Dual unidirectional configuration for bidirectional signal line protection
• Solid-state silicon technology providing resettable circuit interruption
• Integrated overcurrent and overvoltage suppression capabilities

Applications

• Ethernet port protection
• Protection modules and dongles
• Test equipment

Procurement Notes

Verify the specific suffix WH against official Bourns documentation to confirm packaging and tape specifications. Ensure the component meets UL compliance requirements for your target market. Cross-reference the Mouser number 652-TBU-DT085-200-WH with the manufacturer datasheet to validate pinout and thermal characteristics before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring dual-channel surge protection for high-speed data lines. The 850 V rating suits applications with higher transient thresholds compared to lower-voltage variants. Consider the DFN footprint for space-constrained layouts. Verify that the 200 mA holding current aligns with the operational current of the protected Ethernet or data interface.

Part Context

This part belongs to the TBU-DT series of High-Speed Protectors (HSP) manufactured by Bourns. These devices are classified as Electronic Current Limiters (ECL), offering a solid-state alternative to traditional fuses. The series is engineered to block transient currents while maintaining voltage isolation during surge events, serving as a critical barrier in sensitive electronic systems.

Replacement Considerations

The TBU-DT065-200-WH serves as a public confirmed substitute within the same series, featuring a 650 V rating instead of 850 V. Both parts share the dual unidirectional architecture and DFN package. Verify that the reduced voltage threshold of the substitute remains adequate for the specific application's transient environment.