The general purpose optocoupler consists of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a standard plastic 6−pin dual−in−line package. See detailed ordering and shipping information on page 7 of this data sheet. SAFETY AND INSULATION RATINGS (As per DIN EN/IEC. An optocoupler, also known as photocoupler or opto-isolator, is a device which can transfer an electrical signal across two galvanically-isolated circuits by way of optical coupling. Unlike transformers or capacitors, which can only transfer AC signals across the isolation barrier, optocouplers can. DIP-6 Transistor Output Optocouplers are available at Mouser Electronics. On the output a wide variety of actuators can be implemented. The most. All Dimensions are in inches (mm in brackets) 4N38 6-Pin PhotoTransistor Optocoupler Datasheet. Text: GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS TIL111 TIL111-M TIL117-M WHITE PACKAGE -M SUFFIX SCHEMATIC 6 1 1 6 2 5 6 1 3 6 NC 4 PIN 1. BASE 1 BLACK PACKAGE (NO -M SUFFIX) 6 1 6 1 6 1 DESCRIPTION Text: GENERAL PURPOSE 6-PIN.