HMHA281R3V

Transistor, Photovoltaic Output Optoisolators Overview

The HMHA281R3V is a single-channel transistor output optocoupler from onsemi, designed for surface-mount applications. It features a 4-Mini-Flat package with a 4.40mm width. The device provides an isolation voltage of 3750Vrms and supports DC input. Key electrical parameters include a maximum collector-emitter voltage of 80V, a continuous collector current of 50mA, and a forward voltage of up to 1.3V at a maximum forward current of 50mA. The current transfer ratio ranges from 50% to 600% at 5mA input. Switching characteristics include typical rise and fall times of 3µs. The unit operates within a temperature range of -55°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability of 3750Vrms for robust circuit protection
• Compact 4-pin Mini-Flat surface-mount package design
• Fast switching performance with 3µs rise and fall times
• Wide operating temperature range suitable for industrial environments

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in microprocessor interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix R3V against official datasheets to confirm tape-and-reel packaging and RoHS compliance status. Confirm end-of-life or obsolescence status through manufacturer channels prior to finalizing procurement plans. Ensure component authenticity by sourcing from authorized distributors only.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and compact footprint are required. Verify that the 80V collector-emitter rating meets the load requirements. Ensure the 50mA output current capacity is sufficient for the driven circuit. Check compatibility with the 4-Mini-Flat soldering profile during PCB design.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMHA series of optocouplers from onsemi. It utilizes a phototransistor output configuration. The device is distinct from similar models like HMHA281 due to its specific reel packaging variant. It serves as a signal isolation bridge between low-voltage control circuits and higher-voltage loads.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HMHA281R2V is listed as a similar alternative by some distributors. Verify pinout and electrical specifications against the original datasheet before substitution. Other generic transistor-output optocouplers may require schematic adjustments.