HCPL-673K

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-673K is a dual-channel, hermetically sealed optocoupler manufactured by Broadcom Limited. It features a Darlington transistor output configuration housed in a 20-pad Leadless Ceramic Chip Carrier (LCCC) package measuring 8.89x8.89 mm. The device provides galvanic isolation with an insulation voltage of 1500 VDC and supports a maximum continuous output current of 40 mA per channel. It operates with a forward current of 5 mA and exhibits a forward voltage range of 1 to 1.8 V. Designed for high reliability, it is qualified for space applications and functions within a specified power consumption range of 50 to 200 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Hermetically sealed construction ensures high reliability and environmental stability
• Dual-channel design with Darlington output for enhanced current transfer
• Space-qualified certification suitable for mission-critical aerospace environments
• Galvanic isolation capability between input and output circuits

Transistor, Photovoltaic Output Optoisolators Applications

• Aerospace and satellite communication systems requiring radiation-hardened components
• High-reliability industrial control systems demanding long-term operational stability
• Medical equipment requiring strict galvanic isolation standards
• Military avionics and defense electronics utilizing hermetically sealed packages

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix and lot code against the manufacturer's latest datasheet to confirm space qualification status and hermetic seal integrity. Ensure the procurement source is an authorized distributor to guarantee authenticity. Check for any product change notices regarding pinout or material composition updates before finalizing orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation with high current gain is required in harsh environments. The LCCC package offers superior thermal performance and mechanical robustness compared to standard plastic packages. Consider the 1500 VDC isolation rating for safety-critical applications where electrical separation is paramount.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to Broadcom's family of hermetically sealed optocouplers, which includes single, dual, and quad channel variants. These devices are engineered for extreme reliability, distinguishing them from standard commercial-grade optoisolators. The series is widely recognized for its use in applications where failure is not an option, such as space exploration and critical infrastructure.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements include other hermetically sealed dual-channel optocouplers from the same manufacturer family. Verify package dimensions and pin compatibility before substitution. Alternative manufacturers may offer similar specifications but likely lack the specific space qualification unless explicitly stated.