Transistor Output Optocouplers

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	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
Transistor Output Optocouplers AC In Photo Xsistor Output Optocoupler FODM2705R2 onsemi 1: $0.75 22,655In Stock	Mfr. Part No. FODM2705R2 Mouser Part No 512-FODM2705R2	onsemi	Transistor Output Optocouplers AC In Photo Xsistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	22,655In Stock	Cut Tape $0.75 $0.52 $0.365 $0.316 $0.271 Reel $0.227 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers EMITTER ED-010IRC LT210IRGTK110IRGDET FODM121R2V onsemi 1: $0.73 25In Stock	Mfr. Part No. FODM121R2V Mouser Part No 512-FODM121R2V	onsemi	Transistor Output Optocouplers EMITTER ED-010IRC LT210IRGTK110IRGDET Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	25In Stock	Cut Tape $0.73 $0.49 $0.323 $0.268 $0.25 Reel $0.221 MouseReel Available	Min.: 1 Mult.: 1 : 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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121AR2 onsemi 1: $0.62 28,201In Stock	Mfr. Part No. FODM121AR2 Mouser Part No 512-FODM121AR2	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	28,201In Stock	Cut Tape $0.62 $0.43 $0.29 $0.252 $0.237 Reel $0.212 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121BR2 onsemi 1: $0.47 26,139In Stock	Mfr. Part No. FODM121BR2 Mouser Part No 512-FODM121BR2	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	26,139In Stock	Cut Tape $0.47 $0.34 $0.279 $0.242 Reel $0.202 View $0.229 $0.196 MouseReel Available	Min.: 1 Mult.: 1 : 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
Transistor Output Optocouplers Phototransistor Optocoupler FODM121 onsemi 1: $0.49 5,048In Stock 6,000On Order	Mfr. Part No. FODM121 Mouser Part No 512-FODM121	onsemi	Transistor Output Optocouplers Phototransistor Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	5,048In Stock 6,000On Order	$0.49 $0.347 $0.302 $0.301	Min.: 1 Mult.: 1 Max.: 3,000	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
Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput FODM121A onsemi 1: $0.57 2,272In Stock 3,000On Order	Mfr. Part No. FODM121A Mouser Part No 512-FODM121A	onsemi	Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,272In Stock 3,000On Order	$0.57 $0.397 $0.274 $0.258 View $0.248 $0.235	Min.: 1 Mult.: 1 Max.: 3,000	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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121AR2V onsemi 1: $0.66 365In Stock 22,500Expected 14/10/2027	Mfr. Part No. FODM121AR2V Mouser Part No 512-FODM121AR2V	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	365In Stock 22,500Expected 14/10/2027	Cut Tape $0.66 $0.454 $0.347 $0.287 Reel $0.246 View $0.263 $0.228 MouseReel Available	Min.: 1 Mult.: 1 : 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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121CR2 onsemi 1: $0.65 2,343In Stock	Mfr. Part No. FODM121CR2 Mouser Part No 512-FODM121CR2	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,343In Stock	Cut Tape $0.65 $0.448 $0.325 $0.269 $0.251 Reel $0.244 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121CR2V onsemi 1: $0.76 2,276In Stock 2,500On Order	Mfr. Part No. FODM121CR2V Mouser Part No 512-FODM121CR2V	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,276In Stock 2,500On Order	Cut Tape $0.76 $0.514 $0.365 $0.279 $0.26 Reel $0.24 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers Phototransistor Output Optocoupler FODM121R2 onsemi 1: $0.62 3,814In Stock	Mfr. Part No. FODM121R2 Mouser Part No 512-FODM121R2	onsemi	Transistor Output Optocouplers Phototransistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	3,814In Stock	Cut Tape $0.62 $0.43 $0.311 $0.258 $0.24 Reel $0.233 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers 4SO TR FODM121V onsemi 1: $0.62 2,838In Stock	Mfr. Part No. FODM121V Mouser Part No 512-FODM121V	onsemi	Transistor Output Optocouplers 4SO TR Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,838In Stock	$0.62 $0.427 $0.309 $0.256 View $0.239 $0.199 $0.189 $0.181	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
Transistor Output Optocouplers Phototransistor Output Optocoupler FODM124 onsemi 1: $0.71 4,378In Stock 6,000Expected 29/12/2026	Mfr. Part No. FODM124 Mouser Part No 512-FODM124	onsemi	Transistor Output Optocouplers Phototransistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	4,378In Stock 6,000Expected 29/12/2026	$0.71 $0.47 $0.311 $0.301 View $0.271 $0.259	Min.: 1 Mult.: 1 Max.: 3,000	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
Transistor Output Optocouplers Phototransistor Output Optocoupler FODM124R2 onsemi 1: $0.67 2,250In Stock 22,500On Order	Mfr. Part No. FODM124R2 Mouser Part No 512-FODM124R2	onsemi	Transistor Output Optocouplers Phototransistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,250In Stock 22,500On Order On Order Ship Dates Mfr. No: FODM124R2 Stock: 2,250 Can Dispatch Immediately On Order: 10,000 Expected 18/12/2026 12,500 Expected 19/04/2027 Factory Lead Time: 40 Weeks	Cut Tape $0.67 $0.479 $0.343 $0.29 $0.266 Reel $0.223 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers Phototransistor Output Optocoupler FODM2701 onsemi 1: $0.61 190In Stock 24,000On Order	Mfr. Part No. FODM2701 Mouser Part No 512-FODM2701	onsemi	Transistor Output Optocouplers Phototransistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	190In Stock 24,000On Order On Order Ship Dates Mfr. No: FODM2701 Stock: 190 Can Dispatch Immediately On Order: 6,000 Pending 3,000 Expected 17/11/2026 15,000 Expected 24/11/2026 Factory Lead Time: 35 Weeks	$0.61 $0.428 $0.335 $0.316	Min.: 1 Mult.: 1 Max.: 3,000	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
Transistor Output Optocouplers Phototransistor Output Optocoupler FODM2701R2 onsemi 1: $0.65 4,346In Stock 17,500On Order	Mfr. Part No. FODM2701R2 Mouser Part No 512-FODM2701R2	onsemi	Transistor Output Optocouplers Phototransistor Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	4,346In Stock 17,500On Order On Order Ship Dates Mfr. No: FODM2701R2 Stock: 4,346 Can Dispatch Immediately On Order: 7,500 Expected 18/12/2026 10,000 Expected 01/03/2028 Factory Lead Time: 52 Weeks	Cut Tape $0.65 $0.449 $0.325 $0.27 $0.252 Reel $0.222 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers AC In Phototransistr Output Optocoupler FODM2705 onsemi 1: $0.81 4,888In Stock	Mfr. Part No. FODM2705 Mouser Part No 512-FODM2705	onsemi	Transistor Output Optocouplers AC In Phototransistr Output Optocoupler Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	4,888In Stock	$0.81 $0.546 $0.313 $0.303 $0.291	Min.: 1 Mult.: 1 Max.: 3,000	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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM2705R2V onsemi 1: $0.77 2,412In Stock	Mfr. Part No. FODM2705R2V Mouser Part No 512-FODM2705R2V	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,412In Stock	Cut Tape $0.77 $0.535 $0.391 $0.326 Reel $0.27 View $0.305 $0.253 $0.237 $0.228 MouseReel Available	Min.: 1 Mult.: 1 : 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
Transistor Output Optocouplers Phototransistor Out VDE Certified FODM124R2V onsemi 1: $0.69 14,965On Order	Mfr. Part No. FODM124R2V Mouser Part No 512-FODM124R2V	onsemi	Transistor Output Optocouplers Phototransistor Out VDE Certified Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	14,965On Order On Order Ship Dates Mfr. No: FODM124R2V Stock: 0 On Order: 12,465 Expected 01/03/2028 2,500 TBD Factory Lead Time: 40 Weeks	Cut Tape $0.69 $0.475 $0.345 $0.311 $0.285 Reel $0.246 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,500 : 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
Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput FODM121B onsemi 1: $0.73 6,000On Order	Mfr. Part No. FODM121B Mouser Part No 512-FODM121B	onsemi	Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	6,000On Order	$0.73 $0.509 $0.37 $0.307 View $0.269 $0.249	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
Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput FODM121C onsemi 1: $0.78 2,915On Order	Mfr. Part No. FODM121C Mouser Part No 512-FODM121C	onsemi	Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	2,915On Order	$0.78 $0.528 $0.379 $0.314 View $0.283 $0.252	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
Transistor Output Optocouplers Phototrans Ouput MFP Input FODM121AV onsemi 1: $0.73 Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. FODM121AV Mouser Part No 512-FODM121AV	onsemi	Transistor Output Optocouplers Phototrans Ouput MFP Input Learn More about onsemi fairchild fodm121 124 2701 2705	Datasheet	Non-Stocked Lead-Time 26 Weeks	$0.73 $0.509 $0.37 $0.307 View $0.287 $0.26 $0.247	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

FODM121/124/2701/2705 Transistor Optocouplers

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