Description 

The 4N28 is an Industry Standard Single Channel Phototransistor Coupler. This family includes the 4N25, 4N26, 4N27 and 4N28. Each OPTOCOUPLER consists of gallium arsenide infrared LED and a silicon NPN phototransistor. In this chip the primary circuits and secondary circuits are isolated electrically. The pair of diode and phototransistor is there to provide optical trigger mechanism between the primary and secondary circuits.

Specifications

Attribute Value
Mounting Type Through Hole
Output Device Phototransistor
Maximum Forward Voltage 1.5V
Number of Channels 1
Number of Pins 6
Package Type DIP
Input Current Type DC
Typical Rise Time 2µs
Maximum Input Current 60 mA
Isolation Voltage 5 kVrms
Maximum Current Transfer Ratio 30%
Typical Fall Time 2µs

4N28 OPTOCOUPLER OUTPUT: 70V, 50mA

USh1,500Price