HMHAA280R3

Transistor, Photovoltaic Output Optoisolators Overview

The HMHAA280R3 is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and supports both AC and DC input signals. The device provides a high isolation voltage of 3750 Vrms and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 80V, a maximum forward current of 50mA, and a typical rise/fall time of 3µs. The Current Transfer Ratio ranges from 50% to 600% at 5mA input. It is housed in a compact 4-Mini-Flat surface-mount package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Supports AC and DC input signal transmission for versatile circuit integration
• Provides robust electrical isolation with a 3750 Vrms rating between input and output
• Features fast switching performance with typical rise and fall times of 3µs
• Designed for wide operating temperature ranges extending up to 100°C

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise immunity
• General-purpose digital signal isolation in embedded systems

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'R3' corresponds to the required tape-and-reel packaging configuration. Check for end-of-life status as this part may be discontinued. Ensure compliance with RoHS directives if applicable to your manufacturing region. Validate that the 4-Mini-Flat footprint matches your PCB design constraints before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when AC input compatibility is required alongside standard transistor output characteristics. Consider the 3750 Vrms isolation rating for applications demanding high safety margins. Evaluate the 50% to 600% CTR range to ensure sufficient gain for your load requirements. The 3µs switching speed suits moderate-frequency digital signaling but may not support high-speed data transmission. Verify thermal management capabilities given the 100°C maximum junction temperature limit.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the HMHA series of optocouplers from onsemi, designed for general-purpose isolation tasks. The series emphasizes compact form factors suitable for space-constrained designs. The HMHA280 variant specifically targets applications needing reliable signal transfer across isolated boundaries. It complements other components in power management and control architectures where galvanic separation is critical for system safety and noise reduction.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.