The PS9117A-F3-AX from Renesas Electronics is a high‑speed, active‑low type optocoupler that integrates a GaAlAs LED on the input side with a photodiode and signal processing circuit on the output side in a single compact SO‑5 package. This device is specifically designed to deliver high common mode transient immunity (CMR) of ±15kV/µs (minimum) and low pulse width distortion of 35ns (maximum), ensuring reliable signal transmission in noisy industrial environments. With a data rate of 10Mbps and a high isolation voltage of 3,750Vr.m.s., the PS9117A is well‑suited for high‑density applications requiring robust galvanic isolation. The open‑collector output provides design flexibility for interfacing with various logic families. The device is Pb‑free and comes in tape‑and‑reel packaging (2,500 pcs/reel). It is approved under UL (File No. E72422) and DIN EN60747‑5‑2 (VDE0884 Part2) safety standards, making it suitable for measurement equipment, plasma displays, and factory automation netwo