HCPL-817-50DE

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-817-50DE is a single-channel transistor output optocoupler manufactured by Broadcom Limited. It features a GaAsP infrared LED optically coupled to an NPN phototransistor in a PDIP-4 package. Key electrical parameters include a maximum collector-emitter voltage of 70V, a forward current of 50mA, and a typical forward voltage of 1.4V. The device offers a high isolation voltage of 5000 Vrms and a current transfer ratio ranging from 200% to 600%. Typical switching times are 4µs for rise time and 3µs for fall time.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-density mounting in a standard 300mil DIP-4 package
• Features optical coupling between a GaAsP infrared LED and an NPN phototransistor
• Ensures signal isolation with a 5000 Vrms insulation voltage rating

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose digital signal isolation
• Microprocessor system interface circuits
• Solid-state relay driver applications

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix '50DE' against official Broadcom documentation to confirm pinout configuration and packaging type. Ensure compatibility with existing PCB footprints for the PDIP-4 form factor. Check for RoHS compliance status as indicated in the latest datasheet revision. Confirm that the 70V collector-emitter voltage rating meets the circuit requirements.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-cost, general-purpose optocoupler with moderate speed is required. The 50mA forward current capability allows for robust drive signals. The 70V collector-emitter voltage provides sufficient headroom for many logic-level interfaces. Consider the 4µs/3µs switching speeds for applications not requiring high-frequency operation.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-817 series of transistor output optocouplers. The series is designed for general-purpose isolation tasks. Variants within the series may differ in current transfer ratio or packaging style. The HCPL-817-50DE specifically denotes the 50mA forward current and 70V collector-emitter voltage configuration.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements must match the PDIP-4 package and 5000 Vrms isolation rating. Verify that substitute parts support at least 50mA forward current and 70V collector-emitter voltage. Check if alternative models offer compatible current transfer ratios and switching speeds.