| Description | Small size, long lifespan, contactless, strong anti-interference ability, high voltage resistance between output and input insulation, unidirectional signal transmission, etc., widely used in electronic products | 
|---|---|
| Application | Used in electrical insulation, level conversion, interstage coupling, switching circuits, signal isolation, pulse signal amplification, long-distance signal transmission, and input/output interfaces. In a switching power supply, a linear optocoupler can be used to form a voltage feedback circuit, which can adjust the control terminal current to change the duty cycle and achieve precise voltage regulation | 
![]() Pin Configuration  | 
               ![]() DIP-4/SMD-4 Package Size  | 
               
|---|
| CTR Rank | Y | GR | BL | GB | 
|---|---|---|---|---|
| PackageCTR Min( % ) | 50% | 100% | 200% | 100% | 
| CTR Max(%) | 150% | 300% | 600% | 600% | 
| CTR @IF(mA) | 5mA | 5mA | 5mA | 5mA | 
| CTR @Vce(V) | 5V | 5V | 5V | 5V | 
| Vce (V) | 80V | 80V | 80V | 80V | 
| Viso @1min (Vrms) | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 
