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Optocoupler Phototransistors

Würth Elektronik Optocoupler Phototransistors feature 5kV isolation voltage, fast switching time, and good stability of inner isolation. The WL-OCPT series provides an IR LED and phototransistor in one package. These modules offer a stable current transfer ratio (CTR) in a full operating temperature range with different CTR binnings available. Würth Elektronik Optocoupler Phototransistors are ideal for power supplies, office equipment, instrumental applications, computers, and microprocessors.

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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.
Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF Dip 4 M-Type 140817141010 Wurth Elektronik 1: $0.27 25In Stock	Mfr. Part No. 140817141010 Mouser Part No 710-140817141010	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF Dip 4 M-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	25In Stock	$0.27 $0.24 $0.221 $0.201 $0.192	Min.: 1 Mult.: 1
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SLM-Type 140816144400 Wurth Elektronik 1: $0.38 326In Stock 1,500Expected 2026/10/16	Mfr. Part No. 140816144400 Mouser Part No 710-140816144400	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SLM-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	326In Stock 1,500Expected 2026/10/16	Cut Tape $0.38 $0.345 $0.307 $0.269 Reel $0.207 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SL-Type 140816143300 Wurth Elektronik 1: $0.38 5,637In Stock	Mfr. Part No. 140816143300 Mouser Part No 710-140816143300	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SL-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,637In Stock	Cut Tape $0.38 $0.345 $0.307 $0.269 Reel $0.206 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type 140356145100 Wurth Elektronik 1: $0.39 4,895In Stock	Mfr. Part No. 140356145100 Mouser Part No 710-140356145100	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	4,895In Stock	Cut Tape $0.39 $0.344 $0.316 $0.288 $0.276 Reel $0.261 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type 140356145000 Wurth Elektronik 1: $0.39 5,483In Stock	Mfr. Part No. 140356145000 Mouser Part No 710-140356145000	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,483In Stock	Cut Tape $0.39 $0.344 $0.316 $0.288 $0.276 Reel $0.261 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 20CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140214247000 Wurth Elektronik 1: $0.50 5,953In Stock New Product	Mfr. Part No. 140214247000 Mouser Part No 710-140214247000 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 20CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,953In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 50CTR MIN 150CTR MAX 80V 3750VRMS Phototransistor 140214247100 Wurth Elektronik 1: $0.50 5,705In Stock New Product	Mfr. Part No. 140214247100 Mouser Part No 710-140214247100 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 50CTR MIN 150CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,705In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140214247200 Wurth Elektronik 1: $0.50 5,649In Stock New Product	Mfr. Part No. 140214247200 Mouser Part No 710-140214247200 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,649In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 50CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor 140217147000 Wurth Elektronik 1: $0.50 5,741In Stock New Product	Mfr. Part No. 140217147000 Mouser Part No 710-140217147000 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 50CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,741In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80CTR MIN 160CTR MAX 80V 3750VRMS Phototransistor 140217147100 Wurth Elektronik 1: $0.50 5,545In Stock New Product	Mfr. Part No. 140217147100 Mouser Part No 710-140217147100 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80CTR MIN 160CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,545In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 130CTR MIN 260CTR MAX 80V 3750VRMS Phototransistor 140217147200 Wurth Elektronik 1: $0.50 5,841In Stock New Product	Mfr. Part No. 140217147200 Mouser Part No 710-140217147200 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 130CTR MIN 260CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,841In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 200CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140217147300 Wurth Elektronik 1: $0.50 5,980In Stock New Product	Mfr. Part No. 140217147300 Mouser Part No 710-140217147300 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 200CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,980In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 300CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor 140217147400 Wurth Elektronik 1: $0.50 5,626In Stock New Product	Mfr. Part No. 140217147400 Mouser Part No 710-140217147400 New Product	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 300CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,626In Stock	Cut Tape $0.50 $0.35 $0.23 $0.20 $0.18 Reel $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Single Colour LEDs WL-SMTW Wtrclr TopVw Grn 3.2V 50mA 520nm 150141GS73130 Wurth Elektronik 1: $0.40 11,743In Stock	Mfr. Part No. 150141GS73130 Mouser Part No 710-150141GS73130	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw Grn 3.2V 50mA 520nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	11,743In Stock	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw RED 2.4V 50mA 620nm 150141RS73130 Wurth Elektronik 1: $0.40 7,053In Stock 6,000Expected 2026/10/23	Mfr. Part No. 150141RS73130 Mouser Part No 710-150141RS73130	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw RED 2.4V 50mA 620nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	7,053In Stock 6,000Expected 2026/10/23	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SUTW Wtrclr TopVw 395nm 140mW 3.4V 120 153283397A212 Wurth Elektronik 1: $0.64 5,394In Stock	Mfr. Part No. 153283397A212 Mouser Part No 710-153283397A212	Wurth Elektronik	Single Colour LEDs WL-SUTW Wtrclr TopVw 395nm 140mW 3.4V 120 Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	5,394In Stock	Cut Tape $0.64 $0.58 $0.53 $0.461 View Reel $0.39 $0.411 $0.39 $0.39 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Transistor Output Optocouplers WL-OCPT DIP8 S VCE=80V VISO=5000VRM 140827182000 Wurth Elektronik 1: $0.911 972In Stock	Mfr. Part No. 140827182000 Mouser Part No 710-140827182000	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT DIP8 S VCE=80V VISO=5000VRM Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	972In Stock	Cut Tape $0.911 $0.795 $0.686 $0.602 Reel $0.493 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Transistor Output Optocouplers WL-OCPT DIP8 SL VCE=80V VISO=5000VRM 140827183000 Wurth Elektronik 1: $0.911 1,092In Stock	Mfr. Part No. 140827183000 Mouser Part No 710-140827183000	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT DIP8 SL VCE=80V VISO=5000VRM Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	1,092In Stock	Cut Tape $0.911 $0.795 $0.686 $0.602 Reel $0.493 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF LSO 4 V-Type 140100146000 Wurth Elektronik 1: $0.29 39,797In Stock 2,700Expected 2026/10/09	Mfr. Part No. 140100146000 Mouser Part No 710-140100146000	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF LSO 4 V-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	39,797In Stock 2,700Expected 2026/10/09	Cut Tape $0.29 $0.252 $0.233 $0.211 $0.202 Reel $0.192 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 35V 3.75KVrm 10pF SOP 4 V-Type 140354245000 Wurth Elektronik 1: $0.39 6,269In Stock 6,000Expected 2026/10/26	Mfr. Part No. 140354245000 Mouser Part No 710-140354245000	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 35V 3.75KVrm 10pF SOP 4 V-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	6,269In Stock 6,000Expected 2026/10/26	Cut Tape $0.39 $0.344 $0.316 $0.288 $0.276 Reel $0.261 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Single Colour LEDs WL-SMTW Wtrclr TopVw Blu 3.2V 50mA 470nm 150141BS73130 Wurth Elektronik 1: $0.40 2,319In Stock	Mfr. Part No. 150141BS73130 Mouser Part No 710-150141BS73130	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw Blu 3.2V 50mA 470nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	2,319In Stock	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw Ble 3.2V 50mA 470nm 150141BS73140 Wurth Elektronik 1: $0.40 4,111In Stock	Mfr. Part No. 150141BS73140 Mouser Part No 710-150141BS73140	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw Ble 3.2V 50mA 470nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	4,111In Stock	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw Grn 3.2V 50mA 520nm 150141GS73140 Wurth Elektronik 1: $0.40 2,455In Stock 2,000Expected 2026/10/23	Mfr. Part No. 150141GS73140 Mouser Part No 710-150141GS73140	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw Grn 3.2V 50mA 520nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	2,455In Stock 2,000Expected 2026/10/23	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw RED 2.4V 50mA 620nm 150141RS73140 Wurth Elektronik 1: $0.40 2,563In Stock	Mfr. Part No. 150141RS73140 Mouser Part No 710-150141RS73140	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw RED 2.4V 50mA 620nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	2,563In Stock	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw YEl 2.4V 50mA 620nm 150141YS73130 Wurth Elektronik 1: $0.40 3,443In Stock 4,000Expected 2026/10/26	Mfr. Part No. 150141YS73130 Mouser Part No 710-150141YS73130	Wurth Elektronik	Single Colour LEDs WL-SMTW Wtrclr TopVw YEl 2.4V 50mA 620nm Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	3,443In Stock 4,000Expected 2026/10/26	Cut Tape $0.40 $0.355 $0.327 $0.299 $0.283 Reel $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 2,000

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