HMHA281R2

Transistor, Photovoltaic Output Optoisolators Overview

The onsemi HMHA281R2 is a single-channel transistor-output optocoupler housed in a 4-pin Mini-Flat (MFP) surface-mount package. It provides electrical isolation with a rated voltage of 3750Vrms. The device features a DC input and supports a maximum forward current of 50mA, with a typical forward voltage of 1.3V. Key performance metrics include a minimum current transfer ratio of 50% and a maximum of 600%, both measured at 5mA input. Typical rise and fall times are 3μs. The component operates within a temperature range of -55°C to 100°C and complies with UL, EN, and IEC safety standards.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage isolation between input and output circuits for signal transmission
• Utilizes a compact Mini-Flat surface-mount package for space-constrained designs
• Features fast switching characteristics suitable for digital signal applications

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring galvanic isolation
• Signal interfacing between microcontrollers and high-voltage loads
• Power supply feedback loops for circuit protection

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific ordering suffix to ensure the correct tape-and-reel packaging configuration matches your assembly requirements. Confirm that the selected variant aligns with the required safety certifications for your target market. Cross-reference the manufacturer datasheet for any recent product change notices regarding pinout or material composition updates before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a small form factor is critical alongside robust isolation capabilities. Ensure the application voltage does not exceed the 80V collector-emax rating. Consider the 50mA output current limit when designing load circuits. Verify that the operating temperature range meets the environmental conditions of the intended deployment scenario.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMHA series of optocouplers from onsemi, designed for general-purpose isolation tasks. It serves as a modern alternative to larger through-hole packages, offering similar electrical performance in a reduced footprint. The series is widely used in consumer and industrial electronics where board space is limited but reliable signal isolation is mandatory.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers: HMHA281V.