Optocouplers for AC/DC Power Supplies

Isolation is critical to protect both an electronics system and the user from potentially hazardous voltages, or where a high level of electrical isolation between electronics systems is necessary. Digital isolators are known for their speed of data transmission, high level of magnetic immunity, and long life expectancy.

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Results: 249
Select Image Part # Mfr. Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity. Qty. RoHS Vr - Reverse Voltage Rise Time Maximum Collector Current Mounting Style Package/Case Number of Channels Output Type
onsemi Transistor Output Optocouplers Opto Phototransistor Output SM-DIP4 23.102In Stock
32.000Expected 08/09/2026
Min.: 1
Mult.: 1
Max.: 1.410
: 1.000

6 V 18 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers Phototransistor Output 23.791In Stock
Min.: 1
Mult.: 1
Max.: 690
: 1.000

6 V 18 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers Phototransistor Output 20.005In Stock
Min.: 1
Mult.: 1
Max.: 1.000
: 1.000

6 V 18 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers OPTO LIGHTING 7.220In Stock
Min.: 1
Mult.: 1
Max.: 260

6 V 300 us 150 mA Through Hole DIP-4 1 Channel Photodarlington
onsemi Transistor Output Optocouplers OPTO LIGHTING 4.301In Stock
Min.: 1
Mult.: 1
Max.: 210

6 V 300 us 150 mA Through Hole DIP-4 1 Channel Photodarlington
onsemi Transistor Output Optocouplers OPTO LIGHTING 16.627In Stock
13.000Expected 26/10/2026
Min.: 1
Mult.: 1
Max.: 2.000
: 1.000

6 V 300 us 150 mA SMD/SMT SMT-4 1 Channel Photodarlington
onsemi Transistor Output Optocouplers 4Pin DIP Photo Darl Optocoupler 7.322In Stock
8.000Expected 26/10/2026
Min.: 1
Mult.: 1
Max.: 1.250
: 1.000

6 V 300 us 150 mA SMD/SMT SMT-4 1 Channel Photodarlington
onsemi Transistor Output Optocouplers Optocoupler Phototransistor 9.970In Stock
Min.: 1
Mult.: 1
Max.: 410

6 V Through Hole PDIP-6 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers Hi Volt Photodarling 5.270In Stock
Min.: 1
Mult.: 1
Max.: 420
: 1.000

6 V SMD/SMT PDIP-6 Gull Wing 1 Channel Photodarlington
onsemi Transistor Output Optocouplers 4-Pin Half-Pitch Mini-Flat Phototransistor Optocouplers 24.393In Stock
Min.: 1
Mult.: 1
Max.: 5.000
: 2.500

6 V 3 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers Optocoupler Phototransistor 12.242In Stock
Min.: 1
Mult.: 1
Max.: 360

6 V Through Hole PDIP-6 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers DIP-8 DUAL PH TRANS 11.615In Stock
8.000Expected 08/09/2026
Min.: 1
Mult.: 1
Max.: 430

25 V 2.4 us 30 mA Through Hole PDIP-8 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL PH TRAN 12.470In Stock
Min.: 1
Mult.: 1
Max.: 1.000

25 V 2.4 us 30 mA SMD/SMT PDIP-8 Gull Wing 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers 8-Pin Optocoupler Dual Ch Phototrans 13.295In Stock
12.000Expected 13/10/2026
Min.: 1
Mult.: 1
Max.: 3.000
: 1.000

25 V 2.4 us 30 mA SMD/SMT PDIP-8 Gull Wing 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 PHOTO TRANS 33.872In Stock
Min.: 1
Mult.: 1
Max.: 1.200

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers 8-Pin Optocoupler Phototransistor 14.556In Stock
12.500Expected 19/03/2027
Min.: 1
Mult.: 1
Max.: 1.590
: 2.500

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers 8-Pin Optocoupler Phototransistor 7.726In Stock
Min.: 1
Mult.: 1
: 2.500

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL CH PHOTO 6.097In Stock
Min.: 1
Mult.: 1
Max.: 990

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL CHAN OPTOC 16.099In Stock
15.000Expected 25/08/2026
Min.: 1
Mult.: 1
Max.: 1.490
: 2.500

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL CH PHOTO 14.281In Stock
12.000Expected 03/11/2026
Min.: 1
Mult.: 1
Max.: 460

6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 2 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL CH PHOTO 12.931In Stock
Min.: 1
Mult.: 1
Max.: 320

6 V 8 us 150 mA SMD/SMT SOIC-Narrow-8 2 Channel Photodarlington
Broadcom / Avago Transistor Output Optocouplers DC Phototx Coupler 6.678In Stock
14.000Expected 27/08/2026
Min.: 1
Mult.: 1
: 2.000

6 V 2 us 50 mA SMD/SMT SOIC-8 2 Channel NPN Phototransistor
Broadcom / Avago Transistor Output Optocouplers 5000 Vrms 50mA 36.641In Stock
Min.: 1
Mult.: 1

6 V 18 us 50 mA Through Hole PDIP-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers PHOTOTRANSISTOR OUT CTR 100-300 1.544In Stock
4.000On Order
Min.: 1
Mult.: 1
: 800

5 V 2.4 us 50 mA SMD/SMT DIP-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers PHOTOTRANSISTOR OUT CTR 50-150% 4.594In Stock
8.000Expected 27/11/2026
Min.: 1
Mult.: 1
: 800

5 V 2.4 us 50 mA SMD/SMT DIP-4 1 Channel NPN Phototransistor