BROADCOM ACPL-214-500E Phototransistor Optocoupler, SOIC-4, 50mA, 3kV

The BROADCOM ACPL-214-500E is a high-performance, surface-mount phototransistor optocoupler designed for reliable signal isolation in demanding electronic applications. This single-channel device features a half-pitch SOIC (SO) package with 4 pins, offering a compact and efficient solution for printed circuit board designs.

At its core, the optocoupler contains two light-emitting diodes connected in an inverse parallel configuration, which are optically coupled to a phototransistor. This innovative design allows for efficient AC input signal transmission while providing exceptional electrical isolation between the input and output circuits, crucial for protecting sensitive components from voltage spikes and noise.

A key specification is its high current transfer ratio (CTR) of 20% minimum, measured at a forward current (IF) of ±5mA and a supply voltage (VCC) of 5V. It delivers robust performance with a forward current rating of ±50mA and an impressive isolation voltage of 3000Vrms, ensuring safe operation in high-voltage environments. The device also boasts a fast, non-saturated response time of 2µs (typical) and a high common-mode rejection (CMR) of 10kV/µs, making it suitable for high-speed digital interfaces.

Approvals and Reliability

This component meets rigorous international safety standards, holding approvals from CSA and UL, and complies with IEC/EN/DIN EN 60747-5-2. This certification provides assurance of its reliability and safety for use in professional and industrial equipment, giving designers and engineers confidence in their system integrity.