HMHA2801A

Transistor, Photovoltaic Output Optoisolators Overview

The HMHA2801A is a single-channel transistor output optocoupler manufactured by onsemi. It features a gallium arsenide infrared emitting diode coupled to a silicon NPN phototransistor within a compact 4-pin Mini-Flat surface-mount package with a 1.27 mm half-pitch. Key electrical parameters include an isolation voltage of 3750 Vrms, a maximum collector-emitter voltage of 80 V, and a maximum collector current of 50 mA. The device supports a forward current of 50 mA with a typical forward voltage of 1.3 V. Current transfer ratio ranges from 80% to 160%, while rise and fall times are typically 3 µs each. Power dissipation is rated at 210 mW, operating between -55°C and +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation via a 3750 Vrms dielectric barrier between input and output circuits.
• Integrates a gallium arsenide infrared LED driver with a silicon NPN phototransistor for efficient signal transmission.
• Utilizes a space-saving 4-pin Mini-Flat SMD package designed for automated surface-mount assembly processes.

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic devices
• Power supply feedback loop isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging type, as variations exist within the series. Confirm RoHS compliance status through the manufacturer's declaration. Ensure the selected component matches the required insulation voltage and current transfer ratio specifications for the target application circuit design.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a compact footprint and standard phototransistor output are required. Consider the 3750 Vrms isolation rating for safety-critical applications. Evaluate the 80-160% CTR range to ensure adequate drive capability for downstream loads. Verify thermal management requirements given the 210 mW power dissipation limit in enclosed environments.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the HMHA2801 series, which includes variants such as HMHA2801R2V and HMHAA280. These components share similar internal architectures but may differ in packaging formats or specific electrical tolerances. The series is designed for general-purpose isolation tasks requiring reliable performance across wide temperature ranges.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HMHA2801R2V: Identical functional specifications; differs only in reel/cut-tape packaging format instead of tube. HMHAA280: Similar series member; verify specific datasheet parameters for exact compatibility.