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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Phototransistors PHOTOSENSOR OP550A Optek / TT Electronics 1: £0.518 17,956On Order	Mfr. Part No. OP550A Mouser Part No 828-OP550A	Optek / TT Electronics	Phototransistors PHOTOSENSOR	Datasheet	17,956On Order On Order Ship Dates Mfr. No: OP550A Stock: 0 On Order: 7,956 Expected 11/11/2026 10,000 Expected 23/02/2027 Factory Lead Time: 18 Weeks	£0.518 £0.506 Quote Quote	Min.: 1 Mult.: 1
Phototransistors NPN PHOTOTRANSISTOR OP604TXV Optek / TT Electronics 1: £23.83 300Expected 05/03/2027	Mfr. Part No. OP604TXV Mouser Part No 828-OP604TXV	Optek / TT Electronics	Phototransistors NPN PHOTOTRANSISTOR	Datasheet	300Expected 05/03/2027	£23.83	Min.: 1 Mult.: 1
Phototransistors NPN PHOTOTRANSISTOR OP643SL Optek / TT Electronics 1: £1.93 767Expected 09/11/2026	Mfr. Part No. OP643SL Mouser Part No 828-OP643SL	Optek / TT Electronics	Phototransistors NPN PHOTOTRANSISTOR	Datasheet	767Expected 09/11/2026	£1.93 £1.79	Min.: 1 Mult.: 1
Phototransistors NPN PHOTOTRANSISTOR OP644SL Optek / TT Electronics 1: £1.86 932Expected 13/11/2026	Mfr. Part No. OP644SL Mouser Part No 828-OP644SL	Optek / TT Electronics	Phototransistors NPN PHOTOTRANSISTOR	Datasheet	932Expected 13/11/2026	£1.86 £1.72 £1.71	Min.: 1 Mult.: 1
Level Sensors Fluid in-line sensor 0.062" Tube OPB350L062 Optek / TT Electronics 1: £4.38 767Expected 20/11/2026	Mfr. Part No. OPB350L062 Mouser Part No 828-OPB350L062	Optek / TT Electronics	Level Sensors Fluid in-line sensor 0.062" Tube	Datasheet	767Expected 20/11/2026	£4.38 £4.16	Min.: 1 Mult.: 1
Level Sensors Fluid in-line sensor .125" Tube OPB350L125 Optek / TT Electronics 1: £4.22 1,381On Order	Mfr. Part No. OPB350L125 Mouser Part No 828-OPB350L125	Optek / TT Electronics	Level Sensors Fluid in-line sensor .125" Tube	Datasheet	1,381On Order On Order Ship Dates Mfr. No: OPB350L125 Stock: 0 On Order: 581 Expected 18/01/2027 800 Expected 19/01/2027 Factory Lead Time: 16 Weeks	£4.22 £4.16	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB365N55 Optek / TT Electronics 1: £2.37 480Expected 16/12/2026	Mfr. Part No. OPB365N55 Mouser Part No 828-OPB365N55	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	480Expected 16/12/2026	£2.37 £2.28	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB390T51Z Optek / TT Electronics 1: £3.88 550On Order	Mfr. Part No. OPB390T51Z Mouser Part No 828-OPB390T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb380 90z switches	Datasheet	550On Order On Order Ship Dates Mfr. No: OPB390T51Z Stock: 0 On Order: 150 Expected 04/01/2027 400 Expected 18/02/2027 Factory Lead Time: 17 Weeks	£3.88 £3.63	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Rbe Transistor type 0.15 inch Slot Width OPB610 Optek / TT Electronics 1: £1.26 4,084On Order	Mfr. Part No. OPB610 Mouser Part No 828-OPB610	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Rbe Transistor type 0.15 inch Slot Width	Datasheet	4,084On Order On Order Ship Dates Mfr. No: OPB610 Stock: 0 On Order: 1,584 Pending 2,500 Expected 03/03/2027 Factory Lead Time: 14 Weeks	£1.26 £1.17	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Emitter/Sensor Assem OPB700Z Optek / TT Electronics 1: £7.04 797On Order	Mfr. Part No. OPB700Z Mouser Part No 828-OPB700Z	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Emitter/Sensor Assem	Datasheet	797On Order On Order Ship Dates Mfr. No: OPB700Z Stock: 0 On Order: 397 Expected 23/11/2026 400 Expected 26/11/2026 Factory Lead Time: 16 Weeks	£7.04 £6.73	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB704WZ Optek / TT Electronics 1: £3.33 545Expected 11/12/2026	Mfr. Part No. OPB704WZ Mouser Part No 828-OPB704WZ	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	545Expected 11/12/2026	£3.33 £3.29	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB706B Optek / TT Electronics 1: £1.80 954Expected 10/02/2027	Mfr. Part No. OPB706B Mouser Part No 828-OPB706B	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	954Expected 10/02/2027	£1.80 £1.65 Quote Quote	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB707A Optek / TT Electronics 1: £2.30 499Expected 20/11/2026	Mfr. Part No. OPB707A Mouser Part No 828-OPB707A	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	499Expected 20/11/2026	£2.30 £2.17	Min.: 1 Mult.: 1
Optical Switches, Reflective, Photo IC Output EMMITER/SENSOR ASSEM OPB716Z Optek / TT Electronics 1: £5.73 1,297On Order	Mfr. Part No. OPB716Z Mouser Part No 828-OPB716Z	Optek / TT Electronics	Optical Switches, Reflective, Photo IC Output EMMITER/SENSOR ASSEM	Datasheet	1,297On Order On Order Ship Dates Mfr. No: OPB716Z Stock: 0 On Order: 97 Expected 16/11/2026 1,200 Expected 29/12/2026 Factory Lead Time: 16 Weeks	£5.73 £5.37	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB732 Optek / TT Electronics 1: £3.54 1,500Expected 04/01/2027	Mfr. Part No. OPB732 Mouser Part No 828-OPB732	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	1,500Expected 04/01/2027	£3.54 £3.30	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch OPB800L55 Optek / TT Electronics 1: £2.22 1,269On Order	Mfr. Part No. OPB800L55 Mouser Part No 828-OPB800L55	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch	Datasheet	1,269On Order On Order Ship Dates Mfr. No: OPB800L55 Stock: 0 On Order: 269 Expected 25/12/2026 1,000 Expected 19/02/2027 Factory Lead Time: 17 Weeks	£2.22 £2.03 £2.00	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Deep Gap Slotted Opt Switch OPB815L Optek / TT Electronics 1: £2.28 1,820Expected 27/11/2026	Mfr. Part No. OPB815L Mouser Part No 828-OPB815L	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Deep Gap Slotted Opt Switch	Datasheet	1,820Expected 27/11/2026	£2.28 £2.17	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .08" SLOT INFRARED OPB820S5 Optek / TT Electronics 1: £2.98 897Expected 16/12/2026	Mfr. Part No. OPB820S5 Mouser Part No 828-OPB820S5	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .08" SLOT INFRARED	Datasheet	897Expected 16/12/2026	£2.98 £2.85	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Input Diode OPB829CZ Optek / TT Electronics 1: £3.13 1,588Expected 27/01/2027	Mfr. Part No. OPB829CZ Mouser Part No 828-OPB829CZ	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Input Diode	Datasheet	1,588Expected 27/01/2027	£3.13 £3.03	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB842W55Z Optek / TT Electronics 1: £3.64 1,600Expected 11/01/2027	Mfr. Part No. OPB842W55Z Mouser Part No 828-OPB842W55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	1,600Expected 11/01/2027	£3.64 £3.44	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB865T51 Optek / TT Electronics 1: £2.44 1,000Expected 02/02/2027	Mfr. Part No. OPB865T51 Mouser Part No 828-OPB865T51	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	1,000Expected 02/02/2027	£2.44	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN OPB880P51Z Optek / TT Electronics 1: £3.69 1,995Expected 23/12/2026	Mfr. Part No. OPB880P51Z Mouser Part No 828-OPB880P51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	1,995Expected 23/12/2026	£3.69 £3.54	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .125in SLOT OPAQUE OPB891T55Z Optek / TT Electronics 1: £3.62 300Expected 29/12/2026	Mfr. Part No. OPB891T55Z Mouser Part No 828-OPB891T55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .125in SLOT OPAQUE Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	300Expected 29/12/2026	£3.62	Min.: 1 Mult.: 1
Photodiodes FIBER OPTIC PHOTODIO OPF482 Optek / TT Electronics 1: £13.92 185Expected 09/02/2027	Mfr. Part No. OPF482 Mouser Part No 828-OPF482	Optek / TT Electronics	Photodiodes FIBER OPTIC PHOTODIO	Datasheet	185Expected 09/02/2027	£13.92 £12.64 £12.42	Min.: 1 Mult.: 1
Transistor Output Optocouplers 10KV ISOLATION OPI110C Optek / TT Electronics 1: £2.10 5,000On Order	Mfr. Part No. OPI110C Mouser Part No 828-OPI110C	Optek / TT Electronics	Transistor Output Optocouplers 10KV ISOLATION	Datasheet	5,000On Order On Order Ship Dates Mfr. No: OPI110C Stock: 0 On Order: 1,000 Expected 16/12/2026 4,000 Expected 22/12/2026 Factory Lead Time: 16 Weeks	£2.10 £1.97	Min.: 1 Mult.: 1

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