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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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Part #

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OHS3020U
Optek / TT Electronics
1: HK$61.98
903In Stock

Mfr. Part No.
OHS3020U

Mouser Part No
828-OHS3020U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

Datasheet

Product Comments

903In Stock

HK$61.98

View

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OHS3040U
Optek / TT Electronics
1: HK$38.39
586In Stock

Mfr. Part No.
OHS3040U

Mouser Part No
828-OHS3040U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

Datasheet

Product Comments

586In Stock

HK$38.39

HK$37.65

HK$37.57

Min.: 1
Mult.: 1

Transistor Output Optocouplers Optocoupled Isolator

4N24A
Optek / TT Electronics
1: HK$342.45
194In Stock

Mfr. Part No.
4N24A

Mouser Part No
828-4N24A

Optek / TT Electronics

Transistor Output Optocouplers Optocoupled Isolator

Datasheet

194In Stock

HK$342.45

HK$342.36

View

Min.: 1
Mult.: 1

Transistor Output Optocouplers Optocoupled Isolator

4N49
Optek / TT Electronics
1: HK$386.09
170In Stock

Mfr. Part No.
4N49

Mouser Part No
828-4N49

Optek / TT Electronics

Transistor Output Optocouplers Optocoupled Isolator

Datasheet

170In Stock

HK$386.09

HK$374.59

HK$339.24

View

Min.: 1
Mult.: 1

Bipolar Transistors - BJT NPN/PNP Transistor 6 Pin

2N4854U
Optek / TT Electronics
1: HK$298.71
267In Stock

Mfr. Part No.
2N4854U

Mouser Part No
828-2N4854U

Optek / TT Electronics

Bipolar Transistors - BJT NPN/PNP Transistor 6 Pin

Datasheet

267In Stock

HK$298.71

HK$292.22

Quote

Min.: 1
Mult.: 1

Transistor Output Optocouplers Optocoupled Isolator

4N23
Optek / TT Electronics
1: HK$294.28
227In Stock

Mfr. Part No.
4N23

Mouser Part No
828-4N23

Optek / TT Electronics

Transistor Output Optocouplers Optocoupled Isolator

Datasheet

227In Stock

HK$294.28

HK$283.18

Min.: 1
Mult.: 1

Transistor Output Optocouplers Optocoupled Isolator

3C92C
Optek / TT Electronics
1: HK$170.89
147In Stock

Mfr. Part No.
3C92C

Mouser Part No
828-3C92C

Optek / TT Electronics

Transistor Output Optocouplers Optocoupled Isolator

Datasheet

147In Stock

HK$170.89

HK$152.73

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OH360U
Optek / TT Electronics
1: HK$52.61
457In Stock

Mfr. Part No.
OH360U

Mouser Part No
828-OH360U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

Datasheet

Product Comments

457In Stock

HK$52.61

HK$52.53

Min.: 1
Mult.: 1

Transistor Output Optocouplers Optocoupled Isolator

4N49U
Optek / TT Electronics
1: HK$302.91
1,807In Stock

Mfr. Part No.
4N49U

Mouser Part No
828-4N49U

Optek / TT Electronics

Transistor Output Optocouplers Optocoupled Isolator

Datasheet

1,807In Stock

HK$302.91

Min.: 1
Mult.: 1

Bipolar Transistors - BJT NPN G.P. TRANSISTOR

2N2222AUB
Optek / TT Electronics
1: HK$272.74
5In Stock
600On Order

Mfr. Part No.
2N2222AUB

Mouser Part No
828-2N2222AUB

Optek / TT Electronics

Bipolar Transistors - BJT NPN G.P. TRANSISTOR

Datasheet

5In Stock

600On Order

HK$272.74

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

OHB900
Optek / TT Electronics
1: HK$95.43
649In Stock
600Expected 24/8/2026

Mfr. Part No.
OHB900

Mouser Part No
828-OHB900

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

Datasheet

Product Comments

649In Stock

600Expected 24/8/2026

HK$95.43

HK$92.56

HK$89.60

HK$89.35

Quote

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OHN3040U
Optek / TT Electronics
1: HK$38.72
382In Stock

Mfr. Part No.
OHN3040U

Mouser Part No
828-OHN3040U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

Datasheet

Product Comments

382In Stock

HK$38.72

HK$35.76

HK$35.18

HK$35.10

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

OHS3140U
Optek / TT Electronics
1: HK$47.59
392In Stock

Mfr. Part No.
OHS3140U

Mouser Part No
828-OHS3140U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

Datasheet

Product Comments

392In Stock

HK$47.59

Min.: 1
Mult.: 1

Bipolar Transistors - BJT PNP G.P. Transistor 3 Pin

2N2907AUB
Optek / TT Electronics
1: HK$272.74
212In Stock

Mfr. Part No.
2N2907AUB

Mouser Part No
828-2N2907AUB

Optek / TT Electronics

Bipolar Transistors - BJT PNP G.P. Transistor 3 Pin

Datasheet

212In Stock

HK$272.74

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OMH3075
Optek / TT Electronics
1: HK$315.89
150In Stock

Mfr. Part No.
OMH3075

Mouser Part No
828-OMH3075

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

Datasheet

Product Comments

150In Stock

HK$315.89

HK$314.99

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

OH090U
Optek / TT Electronics
1: HK$46.03
239In Stock
1,000Expected 29/10/2026

Mfr. Part No.
OH090U

Mouser Part No
828-OH090U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

Datasheet

Product Comments

239In Stock

1,000Expected 29/10/2026

HK$46.03

HK$44.80

HK$44.06

HK$43.81

HK$42.00

Min.: 1
Mult.: 1

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

OHN3140U
Optek / TT Electronics
1: HK$45.21
330In Stock

Mfr. Part No.
OHN3140U

Mouser Part No
828-OHN3140U

Optek / TT Electronics

Board Mount Hall Effect/Magnetic Sensors HALL EFFECT SENSOR

Datasheet

Product Comments

330In Stock

HK$45.21

HK$41.10

View

Min.: 1
Mult.: 1

Transistor Output Optocouplers OPTIC CPLD ISOLATOR TO-78

JANTX4N24A
Optek / TT Electronics
1: HK$356.58
168In Stock

Mfr. Part No.
JANTX4N24A

Mouser Part No
828-JANTX4N24A

Optek / TT Electronics

Transistor Output Optocouplers OPTIC CPLD ISOLATOR TO-78

Datasheet

168In Stock

HK$356.58

Min.: 1
Mult.: 1

Transistor Output Optocouplers Isolator

3N244
Optek / TT Electronics
1: HK$173.28
3In Stock

Mfr. Part No.
3N244

Mouser Part No
828-3N244

Optek / TT Electronics

Transistor Output Optocouplers Isolator

Datasheet

3In Stock

HK$173.28

Min.: 1
Mult.: 1

Transistor Output Optocouplers TO-78 OCI

JAN4N49
Optek / TT Electronics
1: HK$383.63
1In Stock
99On Order

Mfr. Part No.
JAN4N49

Mouser Part No
828-JAN4N49

Optek / TT Electronics

Transistor Output Optocouplers TO-78 OCI

Datasheet

1In Stock

99On Order

HK$383.63

Min.: 1
Mult.: 1

Transistor Output Optocouplers TO-78 OCI Collector Isolated

JANTX4N49A
Optek / TT Electronics
1: HK$376.39
200Expected 18/3/2027

Mfr. Part No.
JANTX4N49A

Mouser Part No
828-JANTX4N49A

Optek / TT Electronics

Transistor Output Optocouplers TO-78 OCI Collector Isolated

Datasheet

200Expected 18/3/2027

HK$376.39

Min.: 1
Mult.: 1

Transistor Output Optocouplers 4N24A, 4 PIN HCC PKG

HCC242TX
Optek / TT Electronics
240: HK$255.23
Non-Stocked

Mfr. Part No.
HCC242TX

Mouser Part No
828-HCC242TX

Optek / TT Electronics

Transistor Output Optocouplers 4N24A, 4 PIN HCC PKG

Datasheet

Non-Stocked

HK$255.23

Min.: 240
Mult.: 240

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OH180U
Optek / TT Electronics
1,000: HK$57.87
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

Datasheet

Product Comments

Non-Stocked Lead-Time 18 Weeks

HK$57.87

Min.: 1,000
Mult.: 1,000

Board Mount Hall Effect/Magnetic Sensors Hall Effect Sensor

OHS3175U
Optek / TT Electronics
1,000: HK$34.77
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

Datasheet

Product Comments

Non-Stocked Lead-Time 18 Weeks

HK$34.77

Min.: 1,000
Mult.: 1,000

Infrared Emitters 890NM 100mW 100mA

OP224TXV
Optek / TT Electronics
100: HK$247.26
Non-Stocked Lead-Time 34 Weeks

Mfr. Part No.
OP224TXV

Mouser Part No
828-OP224TXV

Optek / TT Electronics

Infrared Emitters 890NM 100mW 100mA

Datasheet

Non-Stocked Lead-Time 34 Weeks

HK$247.26

Min.: 100
Mult.: 100