The 4N37M is a 6-Pin general purpose Phototransistor Optocoupler consists of a gallium arsenide infrared emitting diode driving a silicon phototransistor. It is suitable for digital logic inputs and microprocessor inputs.
850V Maximum working insulation voltage
6000V High allowable overvoltage
-40 to +100°C Operating temperature range
100% Minimum current transfer ratio at IF=10mA, VCE=10V