TBU-PL085-200-WH

Overview

The Bourns TBU-PL085-200-WH is a board mount surge protector from the TBU-PL series. It features an 850 V voltage rating and a 400 mA current rating. The device utilizes SMD/SMT termination within a DFN package. Operating temperature ranges from -55 °C to +125 °C. It provides overcurrent and overvoltage protection for voice and VoIP slic applications.

Feature Summary

• Dual 50 ohm bidirectional device configuration
• Solid-state resettable silicon construction
• Blocks high voltages and currents

Applications

• Voice line protection
• VoIP slic protection
• Signal line protection

Procurement Notes

Verify the specific datasheet version for the TBU-PL085-200-WH to confirm UL compliance status and detailed electrical thresholds. Ensure the DFN package dimensions align with the PCB footprint requirements. Confirm that the 850 V rating meets the system's transient voltage isolation needs.

Selection Notes

Select this component for bidirectional signal lines requiring dual 50 ohm impedance matching. The wide operating temperature range supports harsh environments. Compare against the TBU-CA series if unidirectional protection or different trigger currents are required. Verify AEC-Q101 compliance is not needed, as this model is not listed in the automotive qualified subset.

Part Context

This part belongs to the TBU-PL series of High Speed Protectors (HSP). These devices act as effective barriers placed in series to block transient currents. They provide voltage isolation during energy surge conditions such as lightning or power cross events.

Replacement Considerations

The TBU-PL075-200-WH offers similar functionality with a 750 V impulse rating. For unidirectional applications, consider the TBU-DT085-200-WH. The TBU-CA085-200-WH is a bidirectional alternative but lacks the specific dual 50 ohm designation.