FODM121/124/2701/2705 Transistor Optocouplers

onsemi FODM121/124/2701/2705 Transistor Output Optocouplers consist of a gallium arsenide infrared emitting diode driving a phototransistor in a compact 4-pin mini-flat package. The lead pitch is 2.54mm. The FODM2705 series consists of two gallium arsenide infrared emitting diodes connected in inverse parallel for AC operation. Typical applications for onsemi FODM121/124/2701/2705 Transistor Output Optocouplers include digital logic inputs, microprocessor inputs, power supply monitor, twisted pair line receiver, and telephone line receiver.

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Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package/Case
Number of Channels
Isolation Voltage
Output Type
Current Transfer Ratio - Min
Current Transfer Ratio - Max
If - Forward Current
Vf - Forward Voltage
Maximum Collector Emitter Voltage
Maximum Collector Current
Maximum Collector Emitter Saturation Voltage
Rise Time
Fall Time
Vr - Reverse Voltage
Pd - Power Dissipation
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
26,842In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers AC In Phototransistr Output Optocoupler
Datasheet
7,975In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 300 % 50 mA 1.3 V 40 V 80 mA 300 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM2705 Tube
onsemi Transistor Output Optocouplers AC In Photo Xsistor Output Optocoupler
Datasheet
24,037In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 300 % 50 mA 1.3 V 40 V 80 mA 300 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM2705 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototransistor Optocoupler
Datasheet
7,877In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 600 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Tube
onsemi Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput
Datasheet
520In Stock
3,000Expected 21/4/2026
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 300 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Tube
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
1,270In Stock
10,000Expected 21/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 300 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
1,521In Stock
10,000Expected 5/5/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 300 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput
Datasheet
3,687In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 150 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Tube
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
872In Stock
10,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 150 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput
Datasheet
3,025In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Tube
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
4,180In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototransistor Output Optocoupler
Datasheet
2,258In Stock
10,000Expected 17/2/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 600 % 10 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers EMITTER ED-010IRC LT210IRGTK110IRGDET
Datasheet
5,000In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 600 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototransistor Output Optocoupler
Datasheet
4,789In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 1200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM124 Tube
onsemi Transistor Output Optocouplers Phototransistor Out VDE Certified
Datasheet
7,410In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 1200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM124 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototransistor Output Optocoupler
Datasheet
2,813In Stock
6,000Expected 17/2/2026
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 300 % 50 mA 1.3 V 40 V 80 mA 300 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM2701 Tube
onsemi Transistor Output Optocouplers Phototransistor Output Optocoupler
Datasheet
6,404In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 300 % 50 mA 1.3 V 40 V 80 mA 300 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM2701 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
2,432In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 mA 1.4 V 40 V 80 mA 300 mV 6 V 150 mW - 40 C + 110 C FODM2705 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers 4-Pin Full Pitch Mini-Flat Package Phototransistor Optocouplers
Datasheet
2,867In Stock
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 % 600 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM121
onsemi Transistor Output Optocouplers Phototransistor Output Optocoupler
Datasheet
17,500Expected 17/2/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 100 % 1200 % 50 mA 1.3 V 80 V 80 mA 400 mV 3 us 3 us 6 V 150 mW - 40 C + 110 C FODM124 Reel, Cut Tape, MouseReel
onsemi Transistor Output Optocouplers Phototrans Ouput MFP Input
Datasheet
Lead-Time 15 Weeks
Min.: 1
Mult.: 1

SMD/SMT SMD-4 1 Channel 3750 Vrms NPN Phototransistor 50 mA 1.3 V 80 V 80 mA 400 mV 6 V 150 mW - 40 C + 110 C FODM121 Tube