Hello. Welcome to Futurlec. The electronic components Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. OptoIsolators Part No. Description More Info In Stock Package Qty. Price US$ Order Qty. Order 4N25 4N25 6 Pin Transistor Yes 1 $0.45 4N26 4N26 6 Pin Transistor Yes 1 $0.45 4N27 4N27 6 Pin Transistor Yes 1 $0.45 4N28 4N28 6 Pin Transistor Yes 1 $0.50 4N29 4N29 6 Pin Transistor Yes 1 $0.45 4N30 4N30 6 Pin Transistor Yes 1 $0.45 4N31 4N31 6 Pin Transistor Yes 1 $0.45 4N32 4N32 6 Pin Transistor Yes 1 $0.35 4N33 4N33 6 Pin Transistor Yes 1 $0.45 4N35 4N35 6 Pin Transistor Yes 1 $0.45 4N36 4N36 6 Pin Transistor Yes 1 $0.55 4N37 4N37 6 Pin Transistor Yes 1 $0.45 4N38 4N38 6 Pin Transistor Yes 1 $0.45 4N39 4N39 6 Pin Transistor Yes 1 $0.95 4N40 4N40 6 Pin Transistor Yes 1 $1.60 4N45 4N45 6 Pin Transistor Yes 1 $0.95 4N50 4N50 Transistor (TO-220)   Yes 1 $1.45 6N135 6N135 8 Pin Transistor Yes 1 $1.20 6N136 6N136 8 Pin Transistor Yes 1 $0.95 6N137 6N137 8 Pin Transistor Yes 1 $0.95 6N138 6N138 8 Pin Transistor Yes 1 $1.50 6N139 6N139 8 Pin Transistor Yes 1 $1.25 IL Series IL300G IL300G Linear Optocoupler Yes 1 $2.90 MOC Series MOC3010 MOC3010 Triac Coupler Yes 1 $0.90 MOC3011 MOC3011 Triac Coupler Yes 1 $0.55 MOC3020 MOC3020 Triac Coupler Yes 1 $0.65 MOC3021 MOC3021 Triac Coupler Yes 1 $0.65 MOC3022 MOC3022 Triac Coupler Yes 1 $0.75 MOC3023 MOC3023 Triac Coupler Yes 1 $0.50 MOC3040 MOC3040 Triac Coupler   Yes 1 $0.60 MOC3041 MOC3041 Triac Coupler Yes 1 $0.60 MOC3063 MOC3063 Triac Coupler Yes 1 $1.10 PC817 PC817 High Density Opto-Coupler Yes 1 $0.15 PC847 PC847 High Density Opto-Coupler Yes 1 $1.30 PS250X Series PS2501-1 PS2501-1 High Isolation Voltage PhotoCoupler Yes 1 $0.15 PS2501-2 PS2501-2 High Isolation Voltage PhotoCoupler Yes 1 $0.45 PS2501-4 PS2501-4 High Isolation Voltage PhotoCoupler Yes 1 $0.90 PS2502-1 PS2502-1 High Isolation Voltage PhotoCoupler Yes 1 $0.35 PS2502-2 PS2502-2 High Isolation Voltage PhotoCoupler Yes 1 $0.80 PS2502-4 PS2502-4 High Isolation Voltage PhotoCoupler Yes 1 $1.35 PS2505-1 PS2505-1 High Isolation Voltage PhotoCoupler Yes 1 $0.35 PS2505-2 PS2505-2 High Isolation Voltage PhotoCoupler Yes 1 $0.65 PS2505-4 PS2505-4 High Isolation Voltage PhotoCoupler Yes 1 $1.15 PS2532L1-1 PS2532L1-1 High Isolation Voltage PhotoCoupler Yes 1 $0.50 PS2561L1-1 PS2561L1-1 High Isolation Voltage PhotoCoupler Yes 1 $0.35 TLP Series TLP113 TLP113 PhotoCoupler - SMD Yes 1 $1.65 TLP114A TLP114A PhotoCoupler - SMD Yes 1 $1.55 TLP120 TLP120 OptoCoupler - SMD Yes 1 $0.65 TLP121 TLP121 OptoCoupler - SMD Yes 1 $0.45 TLP127 TLP127 OptoCoupler - SMD Yes 1 $0.55 TLP160G TLP160G PhotoCoupler - SMD Yes 1 $0.95 TLP181 TLP181 PhotoCoupler - SMD Yes 1 $0.30 TLP250 TLP250 Transistor Inverter PhotoCoupler Yes 1 $1.55 TLP251 TLP251 Transistor Inverter PhotoCoupler Yes 1 $1.55 TLP281 TLP281 PhotoCoupler - SMD Yes 1 $0.55 TLP281-4 TLP281-4 Quad PhotoCoupler - SMD Yes 1 $1.65 TLP521-1 TLP521-1 Single PhotoCoupler Yes 1 $0.25 TLP521-2 TLP521-2 Dual PhotoCoupler Yes 1 $0.30 TLP521-4 TLP521-4 Quad PhotoCoupler Yes 1 $0.60