HMHAA280R2

Transistor, Photovoltaic Output Optoisolators Overview

The onsemi HMHAA280R2 is a single-channel surface-mount phototransistor optocoupler designed for AC input applications. It features a 4-pin MFP package with a maximum forward voltage of 1.4V and a peak forward current rating of 50mA. The device provides an isolation voltage of 3750Vrms, ensuring robust electrical separation between circuits. Operating within a temperature range of -55°C to +100°C, it exhibits typical rise and fall times of 3μs. The current transfer ratio ranges from a minimum of 50% to a maximum of 6%, supporting reliable signal transmission in industrial environments.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated phototransistor output for direct switching applications
• High isolation voltage capability for safety-critical circuit separation
• Optimized for AC input signal detection and processing

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring galvanic isolation
• AC mains monitoring and detection circuits
• Solid-state relay driver interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'A' against the datasheet to confirm AC input configuration versus DC variants. Ensure the MFP package dimensions align with PCB footprint requirements. Cross-reference certification marks such as UL or CSA if regulatory compliance is mandatory for the end application. Confirm operating temperature limits meet environmental specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when AC input sensing is required alongside high isolation standards. The 3750Vrms rating suits applications demanding significant voltage separation. Consider the 3μs switching speed for moderate frequency signals. Evaluate the 50mA forward current limit against drive source capabilities to ensure proper LED activation without exceeding ratings.

Transistor, Photovoltaic Output Optoisolators Part Context

Part of the HMHA series, focusing on compact surface-mount solutions. The MFP package offers space efficiency compared to traditional DIP formats. Designed for general-purpose isolation where AC inputs are prevalent. Complements onsemi's portfolio of small-footprint optoelectronic devices.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HMHA281R2 (DC Input variant). Verify input type compatibility before substitution.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum isolation voltage?

The device supports an isolation voltage of 3750Vrms.

Is this component suitable for DC inputs?

No, the HMHAA280R2 is specifically designated for AC input applications.