4N27M Overview
The general purpose optocouplers consist of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a 6-pin dual in-line package. Functional Block Diagram 1 6 2 5 3 NC 4 PIN 1. 7500 1011 0.2 2 Units Vac(pk) Ω pF ©2005 Fairchild Semiconductor Corporation 4NXXM, H11AXM Rev.
4N27M Key Features
- UL recognized (File # E90700, Volume 2)
- VDE recognized (File # 102497)
- Add option V (e.g., 4N25VM)


