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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SLM-Type 140816144400 Wurth Elektronik 1: HK$3.12 301In Stock 1,500Expected 22/10/2026	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	301In Stock 1,500Expected 22/10/2026	Cut Tape HK$3.12 HK$2.84 HK$2.52 HK$2.21 Reel HK$1.70 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SLM-Type 140816144300 Wurth Elektronik 1: HK$3.12 3,000In Stock	Mfr. Part No. 140816144300 Mouser Part No 710-140816144300	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SLM-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	3,000In Stock	Cut Tape HK$3.12 HK$2.84 HK$2.52 HK$2.21 Reel HK$1.70 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF Dip 4 M-Type 140817141010 Wurth Elektronik 1: HK$2.22 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	HK$2.22 HK$1.96 HK$1.82 HK$1.65 HK$1.58	Min.: 1 Mult.: 1
Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type 140356145000 Wurth Elektronik 1: HK$3.21 5,481In 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	5,481In Stock	Cut Tape HK$3.21 HK$2.83 HK$2.60 HK$2.37 HK$2.27 Reel HK$2.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type 140356145300 Wurth Elektronik 1: HK$3.21 4,048In Stock	Mfr. Part No. 140356145300 Mouser Part No 710-140356145300	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	4,048In Stock	Cut Tape HK$3.21 HK$2.83 HK$2.60 HK$2.37 HK$2.27 Reel HK$2.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80V 3.75KVrm 10pF SOP 4 V-Type 140356145100 Wurth Elektronik 1: HK$3.21 4,885In 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	4,885In Stock	Cut Tape HK$3.21 HK$2.83 HK$2.60 HK$2.37 HK$2.27 Reel HK$2.26 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SL-Type 140814243100 Wurth Elektronik 1: HK$3.21 3,845In Stock	Mfr. Part No. 140814243100 Mouser Part No 710-140814243100	Wurth Elektronik	Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SL-Type Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	3,845In Stock	Cut Tape HK$3.21 HK$2.83 HK$2.60 HK$2.37 HK$2.27 Reel HK$2.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Transistor Output Optocouplers WL-OCPT 80V 5KVrms 10pF Dip 4 SL-Type 140816143300 Wurth Elektronik 1: HK$3.12 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 HK$3.12 HK$2.84 HK$2.52 HK$2.21 Reel HK$1.69 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Single Colour LEDs WL-SUTW Wtrclr TopVw 385nm 90mW 3.4V 120D 153283387A212 Wurth Elektronik 1: HK$5.26 2,585In Stock	Mfr. Part No. 153283387A212 Mouser Part No 710-153283387A212	Wurth Elektronik	Single Colour LEDs WL-SUTW Wtrclr TopVw 385nm 90mW 3.4V 120D Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	2,585In Stock	Cut Tape HK$5.26 HK$4.85 HK$4.36 HK$3.78 View Reel HK$3.21 HK$3.37 HK$3.21 HK$3.21 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Transistor Output Optocouplers WL-OCPT 20CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140214247000 Wurth Elektronik 1: HK$4.11 5,947In 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	5,947In Stock	Cut Tape HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 50CTR MIN 150CTR MAX 80V 3750VRMS Phototransistor 140214247100 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140214247200 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 50CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor 140217147000 Wurth Elektronik 1: HK$4.11 5,727In 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	5,727In Stock	Cut Tape HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 80CTR MIN 160CTR MAX 80V 3750VRMS Phototransistor 140217147100 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 130CTR MIN 260CTR MAX 80V 3750VRMS Phototransistor 140217147200 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 200CTR MIN 400CTR MAX 80V 3750VRMS Phototransistor 140217147300 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT 300CTR MIN 600CTR MAX 80V 3750VRMS Phototransistor 140217147400 Wurth Elektronik 1: HK$4.11 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 HK$4.11 HK$2.88 HK$1.89 HK$1.64 HK$1.48 Reel HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Transistor Output Optocouplers WL-OCPT DIP8 S VCE=80V VISO=5000VRM 140827182000 Wurth Elektronik 1: HK$7.48 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 HK$7.48 HK$6.53 HK$5.64 HK$4.95 Reel HK$4.05 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Transistor Output Optocouplers WL-OCPT 35V 5KVrms 10pF LSO 4 V-Type 140100146000 Wurth Elektronik 1: HK$2.38 42,362In Stock	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	42,362In Stock	Cut Tape HK$2.38 HK$2.07 HK$1.92 HK$1.73 HK$1.66 Reel HK$1.58 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: HK$3.21 9,958In Stock	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	9,958In Stock	Cut Tape HK$3.21 HK$2.83 HK$2.60 HK$2.37 HK$2.27 Reel HK$2.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Single Colour LEDs WL-SMTW Wtrclr TopVw Grn 3.2V 50mA 520nm 150141GS73130 Wurth Elektronik 1: HK$3.29 11,693In 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	11,693In Stock	Cut Tape HK$3.29 HK$2.92 HK$2.69 HK$2.46 HK$2.33 Reel HK$2.21 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw RED 2.4V 50mA 620nm 150141RS73130 Wurth Elektronik 1: HK$3.29 6,753In Stock 6,000Expected 26/10/2026	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	6,753In Stock 6,000Expected 26/10/2026	Cut Tape HK$3.29 HK$2.92 HK$2.69 HK$2.46 HK$2.33 Reel HK$2.21 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SMTW Wtrclr TopVw YEl 2.4V 50mA 620nm 150141YS73130 Wurth Elektronik 1: HK$3.29 7,443In Stock	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	7,443In Stock	Cut Tape HK$3.29 HK$2.92 HK$2.69 HK$2.46 HK$2.33 Reel HK$2.21 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Single Colour LEDs WL-SUTW Wtrclr TopVw 365nm 50mW 3.6V 120D 153283367A212 Wurth Elektronik 1: HK$3.12 13,367In Stock	Mfr. Part No. 153283367A212 Mouser Part No 710-153283367A212	Wurth Elektronik	Single Colour LEDs WL-SUTW Wtrclr TopVw 365nm 50mW 3.6V 120D Learn More about Wurth Elektronik optocoupler phototransistors	Datasheet	13,367In Stock	Cut Tape HK$3.12 HK$2.79 HK$2.55 HK$2.38 View Reel HK$1.67 HK$1.77 HK$1.67 HK$1.67 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Single Colour LEDs WL-SUTW Wtrclr TopVw 395nm 140mW 3.4V 120 153283397A212 Wurth Elektronik 1: HK$5.26 5,324In 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	5,324In Stock	Cut Tape HK$5.26 HK$4.77 HK$4.36 HK$3.78 View Reel HK$3.21 HK$3.37 HK$3.21 HK$3.21 MouseReel Available	Min.: 1 Mult.: 1 : 4,000

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