10Pcs SFH617A-4 PDIP-4 Transistor Output Optocouplers RECOMMENDED ALT78-VO617A-4

10Pcs PS2505-1-A DIP-4 Transistor Output Optocouplers Hi-Iso AC Input 1-Ch

7Pcs SFH618A-3 PDIP-4 Transistor Output Optocouplers RECOMMENDED ALT 78-VO618A-3

10Pcs PS2561D-1Y-V-A DIP-4 Transistor Output Optocouplers Optocoupler 4-pin DIP

10Pcs FODM2705R2V SMD-4 Transistor Output Optocouplers Phototrans Ouput MFPInput

10Pcs FOD814SD SMD-4 Transistor Output Optocouplers OPTO LIGHTING

10Pcs PS2505-1-A DIP-4 Transistor Output Optocouplers Hi-Iso AC Input 1-Ch

10Pcs SFH610A-5 Transistor Output Optocouplers H. Relblty 5300 Vrms 250-500% CTR