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: 248
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
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Dual CTR 40-80% 35.804In Stock
Cut Tape
Rp25.684
Rp18.108
Rp13.264
Rp11.521
Reel
Rp9.467
Min.: 1
Mult.: 1
: 2.000
6 V 3 us 2.5 mA SMD/SMT SOIC-8 2 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out 121.760In Stock
Cut Tape
Rp11.558
Rp7.925
Rp5.614
Rp4.752
Reel
Rp3.889
Min.: 1
Mult.: 1
: 3.000
6 V 5.5 us 50 mA SMD/SMT SOP-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Dual CTR 63-125% 4.311In Stock
Rp31.188
Rp19.263
Rp16.768
Rp14.053
Min.: 1
Mult.: 1
6 V 2.8 us 50 mA Through Hole PDIP-8 2 Channel NPN Phototransistor

Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR >100% 4.358In Stock
Cut Tape
Rp19.263
Rp13.484
Rp9.797
Rp8.402
Reel
Rp6.898
Min.: 1
Mult.: 1
: 2.000
6 V 100 mA SMD/SMT SOIC-Narrow-8 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Photodarlington Out Single CTR >600%
12.064In Stock
Cut Tape
Rp11.741
Rp8.476
Rp6.128
Rp5.302
Reel
Rp4.531
Min.: 1
Mult.: 1
: 3.000
6 V 300 us 80 mA SMD/SMT SOP-4 1 Channel Photodarlington
onsemi Transistor Output Optocouplers 4PN DIP Photo Xstr Output Optocoupler 13.500In Stock
Cut Tape
Rp9.723
Rp6.641
Rp4.788
Rp3.944
Reel
Rp2.880
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 Optocoupler Phototransistor 10.846In Stock
Rp9.540
Rp6.219
Rp5.027
Rp4.293
Rp4.128
Min.: 1
Mult.: 1
Max.: 1.000
6 V Through Hole PDIP-6 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers PHOTO TRANS 50.550In Stock
Rp13.393
Rp7.393
Rp6.770
Rp5.651
Rp5.265
Min.: 1
Mult.: 1
Max.: 1.000
6 V SMD/SMT PDIP-6 Gull Wing 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 DUAL PH TRAN 11.945In Stock
Rp18.346
Rp9.393
Rp8.164
Rp6.898
Rp5.907
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 Optocoupler Phototransistor 6.645In Stock
Cut Tape
Rp10.641
Rp7.797
Rp6.091
Rp5.430
Reel
Rp4.605
Rp4.587
Min.: 1
Mult.: 1
: 1.000
6 V SMD/SMT SMD-DIP-6 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers Optocoupler Phototransistor 8.648In Stock
Rp12.292
Rp7.393
Rp5.540
Rp4.733
Rp4.201
Min.: 1
Mult.: 1
Max.: 1.000
6 V Through Hole PDIP-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers RECOMMENDED ALT SFH6 100.964In Stock
Cut Tape
Rp8.072
Rp5.540
Rp3.963
Rp3.247
Reel
Rp2.990
Min.: 1
Mult.: 1
: 1.000
6 V 4.6 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 40-80%
20.432In Stock
Rp11.558
Rp8.439
Rp6.550
Rp5.357
Min.: 1
Mult.: 1
6 V 2 us 50 mA Through Hole PDIP-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers RECOMMENDED ALT VO61
7.333In Stock
Rp19.814
Rp13.943
Rp9.283
Rp8.164
Min.: 1
Mult.: 1
6 V 4.6 us 50 mA Through Hole PDIP-4 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>20%
998In Stock
1.000Expected 08/10/2026
Cut Tape
Rp15.227
Rp10.476
Rp7.614
Rp6.293
Reel
Rp5.761
Min.: 1
Mult.: 1
: 1.000
6 V 50 mA SMD/SMT SMD-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR >50% 4.584In Stock
Rp11.925
Rp8.292
Rp6.017
Rp4.990
Min.: 1
Mult.: 1
5 V 7 us 50 mA Through Hole PDIP-6 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers 4PN DIP Photo Xstr Output Optocoupler 10.905In Stock
Rp7.155
Rp4.990
Rp3.321
Rp2.642
Min.: 1
Mult.: 1
Max.: 2.000
6 V 18 us 50 mA SMD/SMT SMD-4 1 Channel NPN Phototransistor
onsemi Transistor Output Optocouplers SO-8 PHOTO TRANS 2.803In Stock
Rp11.741
Rp8.127
Rp5.852
Rp5.063
Min.: 1
Mult.: 1
6 V 3.2 us 150 mA SMD/SMT SOIC-Narrow-8 1 Channel NPN Phototransistor
Broadcom / Avago Transistor Output Optocouplers 3550 Vrms 60mA 3.736In Stock
Rp12.842
Rp6.806
Rp6.219
Rp5.320
Min.: 1
Mult.: 1
6 V 10 us 100 mA Through Hole PDIP-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>100%
3.402In Stock
Rp14.493
Rp10.072
Rp6.439
Rp5.577
Min.: 1
Mult.: 1
6 V 50 mA SMD/SMT SMD-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 63-125% 1.335In Stock
Rp14.677
Rp8.421
Rp7.027
Rp5.797
Min.: 1
Mult.: 1
6 V 2 us 100 mA Through Hole DIP-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 130-260% 1.447In Stock
Rp11.925
Rp8.072
Rp5.742
Rp4.752
Min.: 1
Mult.: 1
6 V 3 us 50 mA Through Hole DIP-4 1 Channel NPN Phototransistor
onsemi Optically Isolated Amplifiers Isolated Error Amp Optocoupler 1.937In Stock
Rp30.454
Rp18.713
Rp14.824
Rp13.264
Min.: 1
Mult.: 1
50 mA Through Hole PDIP-8 1 Channel Phototransistor
onsemi Transistor Output Optocouplers Phototransistor 2.142In Stock
Cut Tape
Rp23.116
Rp11.943
Rp9.008
Rp7.687
Reel
Rp7.247
Rp7.045
Min.: 1
Mult.: 1
: 1.000
6 V 100 mA SMD/SMT SMD-DIP-6 1 Channel NPN Phototransistor
Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
4.421In Stock
Rp13.943
Rp9.228
Rp5.706
Rp5.027
Min.: 1
Mult.: 1
6 V 2 us 50 mA Through Hole PDIP-6 1 Channel NPN Phototransistor