ON Semiconductor HMHA2801 Optocoupler, Transistor Output, 1 Channel, SSOP, 4 P

The ON Semiconductor HMHA2801 is a high-performance, single-channel phototransistor optocoupler designed for reliable signal isolation in compact electronic circuits. Featuring a 4-pin SSOP (Shrink Small Outline Package) with a half-pitch lead configuration (1.27mm), it offers significant space savings on printed circuit boards, making it ideal for high-density designs.

This component utilises a gallium-arsenide infrared emitting diode optically coupled to a silicon phototransistor, ensuring stable and efficient signal transfer while providing robust electrical isolation. It is engineered to handle a continuous forward current of 50mA and can withstand a reverse input voltage of 6V, ensuring reliable operation in demanding conditions.

With a high isolation voltage of 3.75kV, it provides excellent protection against voltage transients and noise, safeguarding sensitive downstream components. Its current transfer ratio (CTR) minimum of 80% and a collector-emitter voltage (V(br)ceo) of 80V make it a dependable choice for a wide range of digital and analogue interface applications.

Primary Applications

This optocoupler is perfectly suited for isolating digital logic inputs, microprocessor input stages, and various communication line interfaces. It is an excellent component for use in twisted-pair line receivers and telephone line receivers, where signal integrity and noise immunity are paramount.

Key Industries

Its characteristics make it a fundamental part of systems in Power Management and Signal Processing, where precise control and isolation between different circuit sections are required for safety and performance.