HCPL-4731#520

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4731#520 is a dual-channel high-speed optocoupler manufactured by Broadcom Limited. It features a photodarlington output configuration housed in an 8-pin PDIP Gull Wing package designed for through-hole mounting. The device provides an isolation voltage of 3750 Vrms and supports data rates up to 100 kb/s. Key electrical parameters include a forward current of 10 mA, a forward voltage of 1.2 V, and a maximum collector output current of 60 mA. The unit operates within a temperature range of -40°C to +85°C with a power dissipation rating of 115 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Dual-channel architecture providing independent signal isolation paths within a single compact package.
• High gain photodarlington output stage designed for efficient driving of subsequent logic or load circuits.
• Robust electrical isolation capability ensuring safety and noise immunity between input and output sides.

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring galvanic isolation for signal transmission.
• Data communication interfaces utilizing standard DIP form factors.
• Power supply feedback loops for monitoring and regulation.

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix #520 against official Broadcom documentation to confirm tape-and-reel packaging requirements versus tube packaging. Ensure the procurement order explicitly matches the full part number to avoid confusion with other variants in the HCPL-4731 family that may differ in packaging or lead-free status. Cross-reference the manufacturer's latest datasheet for any recent product change notices affecting availability or specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a dual-channel solution is required with pin compatibility to the HCPL-2731 standard. The photodarlington output is suitable for applications needing higher current drive capabilities compared to transistor outputs. Consider the 100 kb/s data rate limit when designing for high-speed digital signals. Verify that the 3750 Vrms isolation rating meets the safety standards of the target application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

The HCPL-4731 belongs to Broadcom's high-speed optocoupler series, offering dual-channel functionality in an 8-pin DIP package. It serves as a modern replacement or alternative to legacy components like the HCPL-2731, maintaining pin compatibility while potentially offering updated manufacturing processes. This series is designed for general-purpose isolation tasks where moderate speed and high gain are necessary.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The HCPL-4731 is documented as pin-compatible with the HCPL-2731. Verify functional equivalence regarding output type and speed before substitution. No other direct substitute part numbers are confirmed in the provided source material.