C850-100-WH

Overview

The C850-100-WH is a bidirectional Transient Bus Unit (TBU) from Bourns, designed as a high-speed surge protector. It features a working voltage of 425V and an impulse withstand voltage (Vimp) of 850V. The device handles a current interruption rating of 100mA. Packaged in a compact 3-SMD No Lead format, it offers extremely high speed performance and GHz-compatible bandwidth. This component blocks high voltages and currents while maintaining signal integrity for sensitive electronic circuits.

Feature Summary

• Bidirectional protection mechanism
• Extremely high speed response
• Blocks high voltages and currents
• Very high bandwidth compatible with GHz signals

Applications

• RS-485 circuit protection
• RS-422 circuit protection
• General purpose board mount surge suppression

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and lead time requirements are met. Confirm that the 425V working voltage aligns with the target system's operational parameters. Check RoHS compliance status if required by local regulations. Ensure the 3-SMD footprint matches the PCB design constraints before finalizing procurement orders.

Selection Notes

Select this component when high-speed data line protection is required without signal degradation. The C850-100-WH is suitable for applications needing GHz-compatible bandwidth. Use it where standard clamps may introduce excessive capacitance or slower response times. Coordinate surge protection with downstream clamping devices to manage residual voltage effectively during transient events.

Part Context

The C850-100-WH belongs to the C650 and C850 Series of TBU products. These series are categorized as high-speed protectors within Bourns' portfolio. The part serves as a primary line protection device, often used in conjunction with secondary clamping components to provide comprehensive surge suppression for communication interfaces and sensitive digital circuits.

Replacement Considerations

Consult official substitution lists for equivalent TBU devices. Verify that any alternative part maintains the 425V working voltage and 100mA current handling capability. Ensure the replacement supports the same 3-SMD no-lead package dimensions. Confirm compatibility with RS-485 and RS-422 signaling speeds before implementing changes.