C850-180-WH

Overview

The C850-180-WH is a Transient Blocking Unit (TBU) surge protection device manufactured by Bourns Inc. It features a working voltage of 425V and a clamping voltage of 850V. The component has a maximum surge current rating of 180mA. Designed for surface mount applications, it utilizes a 3-SMD, No Lead package style, specifically identified as a 3-DFN configuration to preserve device integrity while providing mechanical and thermal protection.

Feature Summary

• Resettable functionality allows full restoration after multiple fault events
• Provides robust transient voltage suppression for sensitive circuits
• Surface mount design ensures mechanical and thermal stability

Applications

• Telecommunications equipment protection
• Industrial circuit safeguarding
• Data line surge prevention

Procurement Notes

Verify the specific suffix WH against official Bourns documentation to confirm package type and temperature grade. Ensure the selected variant matches the required 180mA surge current rating and 850V clamping specification for the target application environment. Cross-reference datasheet revisions to confirm pinout compatibility.

Selection Notes

Select this component when resettable surge protection is required for high-voltage lines. The 425V working voltage suits telecom and industrial interfaces. Consider the 3-DFN package for space-constrained PCB layouts requiring reliable thermal management during transient events without permanent circuit interruption.

Part Context

This part belongs to the TBU series from Bourns Electronic Solutions, designed for transient blocking. It complements other circuit protection offerings such as varistors and PPTC fuses. The series focuses on non-linear resistance characteristics to isolate faults while maintaining normal operation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.