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High Reliability Sensors

Optek / TT Electronics High Reliability Sensors are engineered to deliver consistent, non-contact sensing and signal isolation in demanding environments. Built on proven optical and magnetic technologies, these sensor solutions deliver reliable performance where contamination, misalignment, and electrical noise can impact system operation. Designed for flexibility and long service life, this portfolio of Optek / TT Electronics sensors supports industrial, medical, aerospace, and control applications requiring stable, repeatable detection.

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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.
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OHS3040U Optek / TT Electronics 1: £3.60 580In Stock	Mfr. Part No. OHS3040U Mouser Part No 828-OHS3040U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	580In Stock	£3.60	Min.: 1 Mult.: 1
Transistor Output Optocouplers Optocoupled Isolator 4N24A Optek / TT Electronics 1: £31.30 145In Stock	Mfr. Part No. 4N24A Mouser Part No 828-4N24A	Optek / TT Electronics	Transistor Output Optocouplers Optocoupled Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	145In Stock	£31.30 £31.29 £31.27 View Quote	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OMH3075 Optek / TT Electronics 1: £29.29 150In Stock	Mfr. Part No. OMH3075 Mouser Part No 828-OMH3075	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek tt omh bs sensors	Datasheet	150In Stock	£29.29 £28.81 £28.45 Quote Quote	Min.: 1 Mult.: 1
Transistor Output Optocouplers Optocoupled Isolator 4N49 Optek / TT Electronics 1: £35.29 154In Stock	Mfr. Part No. 4N49 Mouser Part No 828-4N49	Optek / TT Electronics	Transistor Output Optocouplers Optocoupled Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	154In Stock	£35.29 £34.24 £30.98 Quote Quote	Min.: 1 Mult.: 1
Bipolar Transistors - BJT NPN/PNP Transistor 6 Pin 2N4854U Optek / TT Electronics 1: £29.10 267In Stock	Mfr. Part No. 2N4854U Mouser Part No 828-2N4854U	Optek / TT Electronics	Bipolar Transistors - BJT NPN/PNP Transistor 6 Pin Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	267In Stock	£29.10	Min.: 1 Mult.: 1
Transistor Output Optocouplers Optocoupled Isolator 4N23 Optek / TT Electronics 1: £26.88 205In Stock	Mfr. Part No. 4N23 Mouser Part No 828-4N23	Optek / TT Electronics	Transistor Output Optocouplers Optocoupled Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	205In Stock	£26.88 £26.00 £25.99 View Quote	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR OHN3140U Optek / TT Electronics 1: £8.18 330In Stock	Mfr. Part No. OHN3140U Mouser Part No 828-OHN3140U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	330In Stock	£8.18 £8.17 £8.07 £4.62 View £4.16 Quote	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OH360U Optek / TT Electronics 1: £5.03 450In Stock	Mfr. Part No. OH360U Mouser Part No 828-OH360U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	450In Stock	£5.03	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OHS3020U Optek / TT Electronics 1: £5.93 903In Stock	Mfr. Part No. OHS3020U Mouser Part No 828-OHS3020U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	903In Stock	£5.93	Min.: 1 Mult.: 1
Transistor Output Optocouplers Isolator 3N244 Optek / TT Electronics 1: £15.83 3In Stock	Mfr. Part No. 3N244 Mouser Part No 828-3N244	Optek / TT Electronics	Transistor Output Optocouplers Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	3In Stock	£15.83	Min.: 1 Mult.: 1
Transistor Output Optocouplers OPTIC CPLD ISOLATOR TO-78 JANTX4N24A Optek / TT Electronics 1: £30.97 168In Stock	Mfr. Part No. JANTX4N24A Mouser Part No 828-JANTX4N24A	Optek / TT Electronics	Transistor Output Optocouplers OPTIC CPLD ISOLATOR TO-78 Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	168In Stock	£30.97	Min.: 1 Mult.: 1
Transistor Output Optocouplers TO-78 OCI Collector Isolated JANTX4N49A Optek / TT Electronics 1: £32.69 200In Stock	Mfr. Part No. JANTX4N49A Mouser Part No 828-JANTX4N49A	Optek / TT Electronics	Transistor Output Optocouplers TO-78 OCI Collector Isolated Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	200In Stock	£32.69	Min.: 1 Mult.: 1
Transistor Output Optocouplers Optocoupled Isolator 4N49U Optek / TT Electronics 1: £27.67 1,388In Stock	Mfr. Part No. 4N49U Mouser Part No 828-4N49U	Optek / TT Electronics	Transistor Output Optocouplers Optocoupled Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	1,388In Stock	£27.67	Min.: 1 Mult.: 1
Bipolar Transistors - BJT NPN G.P. TRANSISTOR 2N2222AUB Optek / TT Electronics 1: £24.91 5In Stock 990On Order	Mfr. Part No. 2N2222AUB Mouser Part No 828-2N2222AUB	Optek / TT Electronics	Bipolar Transistors - BJT NPN G.P. TRANSISTOR Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	5In Stock 990On Order On Order Ship Dates Mfr. No: 2N2222AUB Stock: 5 Can Dispatch Immediately On Order: 30 Expected 16/02/2027 360 Expected 31/03/2027 600 Expected 14/05/2027 Factory Lead Time: 35 Weeks	£24.91	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR OHB900 Optek / TT Electronics 1: £8.71 1,195In Stock	Mfr. Part No. OHB900 Mouser Part No 828-OHB900	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	1,195In Stock	£8.71 £8.45 £8.18 £8.16 Quote Quote	Min.: 1 Mult.: 1
Bipolar Transistors - BJT PNP G.P. Transistor 3 Pin 2N2907AUB Optek / TT Electronics 1: £24.91 204In Stock	Mfr. Part No. 2N2907AUB Mouser Part No 828-2N2907AUB	Optek / TT Electronics	Bipolar Transistors - BJT PNP G.P. Transistor 3 Pin Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	204In Stock	£24.91	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OHN3040U Optek / TT Electronics 1: £3.54 167In Stock	Mfr. Part No. OHN3040U Mouser Part No 828-OHN3040U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	167In Stock	£3.54 £3.36	Min.: 1 Mult.: 1
Transistor Output Optocouplers Optocoupled Isolator 3C92C Optek / TT Electronics 1: £15.61 34In Stock 100Expected 10/06/2027	Mfr. Part No. 3C92C Mouser Part No 828-3C92C	Optek / TT Electronics	Transistor Output Optocouplers Optocoupled Isolator Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	34In Stock 100Expected 10/06/2027	£15.61 £15.36	Min.: 1 Mult.: 1
Transistor Output Optocouplers TO-78 OCI JAN4N49 Optek / TT Electronics 1: £35.07 2In Stock 100Expected 10/05/2027	Mfr. Part No. JAN4N49 Mouser Part No 828-JAN4N49	Optek / TT Electronics	Transistor Output Optocouplers TO-78 OCI Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	2In Stock 100Expected 10/05/2027	£35.07 £35.03 £34.06	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR OH090U Optek / TT Electronics 1: £4.43 924Expected 28/10/2026	Mfr. Part No. OH090U Mouser Part No 828-OH090U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	924Expected 28/10/2026	£4.43 £4.26 £4.19 £4.16 View £3.92 Quote	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR OHS3140U Optek / TT Electronics 1: £4.35 974Expected 25/01/2027	Mfr. Part No. OHS3140U Mouser Part No 828-OHS3140U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	974Expected 25/01/2027	£4.35	Min.: 1 Mult.: 1
Bipolar Transistors - BJT NPN G.P. Transistor 4 Pin 2N2222AUA Optek / TT Electronics 1: £24.91 240Expected 13/04/2027	Mfr. Part No. 2N2222AUA Mouser Part No 828-2N2222AUA	Optek / TT Electronics	Bipolar Transistors - BJT NPN G.P. Transistor 4 Pin Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	240Expected 13/04/2027	£24.91	Min.: 1 Mult.: 1
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OH180U Optek / TT Electronics 1,000: £5.28 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. OH180U Mouser Part No 828-OH180U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	Non-Stocked Lead-Time 18 Weeks	£5.28	Min.: 1,000 Mult.: 1,000
Transistor Output Optocouplers 4N24A, 4 PIN HCC PKG HCC242TX Optek / TT Electronics 240: £26.10 Non-Stocked	Mfr. Part No. HCC242TX Mouser Part No 828-HCC242TX	Optek / TT Electronics	Transistor Output Optocouplers 4N24A, 4 PIN HCC PKG Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	Non-Stocked	£26.10 View Quote	Min.: 240 Mult.: 240
Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor OHS3175U Optek / TT Electronics 1,000: £3.18 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. OHS3175U Mouser Part No 828-OHS3175U	Optek / TT Electronics	Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor Learn More about Optek / TT Electronics optek high reliability sensors	Datasheet	Non-Stocked Lead-Time 18 Weeks	£3.18	Min.: 1,000 Mult.: 1,000

High Reliability Sensors

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High Reliability Sensors

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