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