HMHA2801AR3

Transistor, Photovoltaic Output Optoisolators Overview

The HMHA2801AR3 is a single-channel transistor output optocoupler from onsemi, housed in a 4-pin Mini-Flat surface-mount package. It provides an isolation voltage of 3750 Vrms and features an NPN phototransistor output capable of handling up to 50 mA collector current. The device operates with a maximum forward current of 50 mA and exhibits a typical forward voltage of 1.3 V. Key electrical parameters include a collector-emitter saturation voltage of 300 mV max, a CTR range of 80% to 160%, and rise/fall times of 3 µs each. It supports a wide operating temperature range from -55°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation via a compact surface-mount design
• Features fast switching performance with symmetric rise and fall times
• Delivers stable signal transmission through consistent current transfer ratio

Transistor, Photovoltaic Output Optoisolators Applications

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

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'AR3' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure that the component meets all required safety certifications such as UL, IEC, and EN standards for your target application. Cross-reference the datasheet revision history to confirm compatibility with existing designs and check for any recent product change notifications regarding assembly or material composition.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a small footprint and high isolation voltage are critical requirements. The Mini-Flat package offers space efficiency compared to standard SOIC options while maintaining robust electrical characteristics. Consider the 80% to 160% CTR range for circuit design margins and ensure the thermal management strategy accommodates the specified power dissipation limits within the operational temperature range.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMHA2801 series of phototransistor optocouplers designed for general-purpose isolation applications. The series emphasizes compactness and reliability, utilizing a half-pitch Mini-Flat package to minimize board space. It serves as a solution for bridging low-voltage control logic with higher-voltage power stages safely.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other 4-pin Mini-Flat optocouplers from onsemi or compatible manufacturers offering similar isolation ratings and pin configurations. Verify that alternative parts match the 3750 Vrms isolation voltage and 50 mA output current capabilities to maintain system integrity.