HMA124R1

Transistor, Photovoltaic Output Optoisolators Overview

The HMA124R1 is a single-channel transistor output optocoupler manufactured by Fairchild Semiconductor. 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 maximum collector-emitter voltage of 80V. It operates within a temperature range of -40°C to 100°C, featuring a typical rise and fall time of 3µs.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Compact 4-pin Mini-Flat package design with a maximum standoff height of 2.4 mm
• High isolation capability rated at 3750Vrms for circuit protection
• Integrated gallium arsenide infrared LED driving a silicon phototransistor

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Power supply feedback loops requiring galvanic separation
• Microcontroller interface circuits for noise immunity

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer marking on the component body to confirm Fairchild Semiconductor origin. Ensure the package type matches the specified 4-SMD Mini-Flat configuration. Cross-reference the part number against current ON Semiconductor catalogs, as Fairchild's semiconductor division was acquired. Confirm that the specific suffix 'R1' aligns with the required reel or tape packaging specifications if applicable.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-profile surface-mount solution is required for single-channel isolation. The 3750Vrms rating suits applications demanding robust dielectric strength between input and output stages. Consider the 80V output voltage limit and 80mA collector current capacity during circuit design. The wide operating temperature range makes it suitable for environments with thermal fluctuations.

Transistor, Photovoltaic Output Optoisolators Part Context

The HMA124R1 belongs to the HMA124 series of full-pitch mini-flat optocouplers. This series is characterized by its small form factor and high isolation voltage. The product line has transitioned under ON Semiconductor following corporate acquisitions. The device remains a standard choice for compact isolation needs in modern electronic assemblies.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct equivalents within the ON Semiconductor portfolio. Verify pinout compatibility and isolation voltage ratings before substitution. Ensure the replacement device meets the same 4-SMD package dimensions.