This part is a kind of semiconductor called 4N27.

Function of this product has GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS 4N25 4N37 4N26 H11A1 4N27 H11A2 4N28 H11A3 4N35 H11A4 SCHEMATIC 1 6 4N36 H11A5 WHITE PACKAGE (-M SUFFIX) 6 1 6 2 5 3 NC 4 1 6 1 PIN 1. ANODE 2. CATHODE 3. NO CONNECTION 4. EMITTER 5. COLLECTOR 6. BASE BLACK PACKAGE (NO -M SUFFIX) 6 1 6 1 6 1 DESCRIPTION The general purpose optocouplers consist of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a 6-pin dual in-line package. FEATURES • Also available in white package by specifying -M suffix, eg. 4N25-M • UL recognized (File # E90700) • VDE recognized (File # 94766) - Add option V for white package (e.g., 4N25V-M) - Add option 300 for black package (e.g., 4N25.300) APPLICATIONS • Power supply regulators • Digital logic inputs • Microp [ ... ]

4N27 PDF Datasheet Download