HMA124

Transistor, Photovoltaic Output Optoisolators Overview

The HMA124 is a single-channel transistor output optocoupler manufactured by onsemi. It integrates a gallium arsenide infrared emitting diode with a silicon phototransistor in a compact 4-pin Mini-Flat surface-mount package. The device provides an isolation voltage of 3750Vrms and supports a collector-emitter voltage of 80V with a maximum output current of 80mA per channel. Key electrical parameters include a typical rise and fall time of 3µs, a forward voltage of 1.3V (max), and a DC forward current rating of 50mA. The saturation voltage is specified at a maximum of 400mV. It operates within a temperature range of -40°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Compact 4-pin Mini-Flat package design with a maximum standoff height of 2.4 mm and a lead pitch of 2.54 mm.
• High isolation capability rated at 3750Vrms for reliable signal transmission across isolated circuits.
• Fast switching performance with typical rise and fall times of 3 microseconds.

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose digital signal isolation in industrial control systems
• Interface between microcontrollers and high-voltage loads
• Signal coupling in power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific ordering suffix to confirm the exact package variant and tape-and-reel specifications. Ensure the selected component matches the required Current Transfer Ratio group if precise gain characteristics are critical for the application design. Cross-reference the datasheet revision date to confirm compliance with current environmental standards.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-profile surface-mount solution is required for galvanic isolation. Consider the 80V collector-emitter voltage limit and 80mA output current capacity against load requirements. Evaluate the 3µs switching speed suitability for the target data rate. Confirm that the operating temperature range meets the environmental conditions of the final assembly.

Transistor, Photovoltaic Output Optoisolators Part Context

The HMA124 belongs to the HMA124/HMA121 series from onsemi, designed for cost-effective isolation solutions. It utilizes a gallium arsenide LED coupled to a silicon phototransistor. This series is part of onsemi's standard product portfolio, offering scalable reliability for various electronic applications requiring compact form factors and robust electrical isolation.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical parameter overlaps before considering alternative manufacturers or series.