HCPL4502

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4502 is a single-channel high-speed diode-transistor optocoupler manufactured by Broadcom Limited. It features a data rate of 1 Mb/s and an isolation voltage of 3750 Vrms. The device utilizes a phototransistor output with a typical current transfer ratio of 25%. Key electrical parameters include a forward current of 16 mA, forward voltage of 1.5 V, reverse voltage of 5 V, and output current of 8 mA. Power dissipation is rated at 100 mW. Operating temperatures range from 0°C to +70°C for standard variants.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides electrical insulation between input and output using an insulating layer between the LED and integrated photodetector.
• Separate connections for photodiode bias and output-transistor collector reduce base-collector capacitance to increase speed significantly compared to conventional phototransistor couplers.

Transistor, Photovoltaic Output Optoisolators Applications

• High-speed digital signal transmission requiring galvanic isolation
• TTL-compatible logic interface circuits
• Industrial control systems with noise immunity requirements

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., -000E for through-hole DIP, -300E for surface mount) to ensure correct package type and lead-free compliance. Confirm RoHS status as some listings indicate non-compliance or varying environmental certifications. Check manufacturer documentation for updated safety approvals such as UL, CSA, IEC, and EN standards relevant to your region.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single channel with 1 Mb/s data rate and 3750 Vrms isolation is required. Ensure the chosen package variant matches the PCB layout constraints, whether through-hole or surface mount. Verify that the 16 mA forward current capability aligns with the driving circuit's output specifications and that the operating temperature range suits the application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

The HCPL-4502 belongs to the HCPL series of single-channel high-speed optocouplers. It is part of a family that includes variants like HCPL-4503 and HCPL-0452, offering different pin configurations or performance characteristics while maintaining similar core isolation and speed technologies based on diode-transistor architecture.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Users should consult official replacement guides or datasheets for cross-reference information.

Transistor, Photovoltaic Output Optoisolators FAQ

How does the HCPL-4502 achieve higher speed than conventional phototransistor optocouplers?

It uses separate connections for the photodiode bias and the output-transistor collector, which reduces base-collector capacitance and increases speed up to a hundred times that of conventional designs.

What is the maximum isolation voltage of the HCPL-4502?

The maximum isolation voltage is 3750 Vrms.