Broadcom 2-Channel SOIC-8 Optocoupler, Transistor Output, 3kV Isolation

The Broadcom 2-Channel SOIC-8 Optocoupler is a high-performance, dual-channel phototransistor coupler designed to provide reliable electrical isolation and signal transmission between circuits. Engineered with an AC input, this half-pitch component is ideal for creating a safe interface in systems where different potentials and impedances must be separated.

It delivers a guaranteed current transfer ratio (CTR) of 20% minimum, ensuring efficient signal coupling. A key safety feature is its high input-output isolation voltage of 3750VRMS (3kV), which provides robust protection against voltage surges and enhances system integrity. This makes it perfectly suited for noise-sensitive environments and industrial applications.

Performance and Reliability

The optocoupler offers excellent switching performance with a non-saturated response time of 2μs typical, enabling fast signal processing in control loops. It also boasts a high common-mode rejection (CMR) of 10kV/μs typical, which minimises interference from electrical noise, ensuring signal integrity in demanding conditions. The device is approved to cUL safety standards, confirming its reliability for use in professional and regulated equipment.

Primary Applications

This component is specifically designed for use as an I/O interface in programmable logic controllers (PLCs), computer peripherals, and sequence controllers. It is also widely used in system appliances, measuring instruments, and for general signal transmission where galvanic isolation is critical to protect microcontrollers and logic circuits from high voltages.

Housed in a compact SOIC-8 package, it saves valuable board space while delivering robust performance. With a forward current rating of 50mA and a collector-emitter voltage of 80V, it is a versatile and dependable choice for a broad range of electronic designs requiring safe, isolated communication.