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Sensors Portfolio

Littelfuse is a global leader in magnetic sensing solutions with a portfolio covering reed switches, reed sensors, hall effect sensors, reed relays, and magnetic actuators. Littelfuse also offers a broad range of thermistors, resistance temperature detectors (RTDs), digital temperature indicators, and probes and assemblies for temperature sensing applications.

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Part #

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

59140-020
Littelfuse
1: $5.23
1,000On Order

Mfr. Part No.
59140-020

Mouser Part No
934-59140-020

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

Datasheet

1,000On Order

$5.23

$4.23

$3.79

$3.46

View

Min.: 1
Mult.: 1

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

59140-1-V-02-A
Littelfuse
1: $5.18
1,288Expected 7/7/2026

Mfr. Part No.
59140-1-V-02-A

Mouser Part No
934-59140-1-V-02-A

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

Datasheet

1,288Expected 7/7/2026

$5.18

$4.02

$3.57

$3.27

View

Min.: 1
Mult.: 1

Proximity Sensors 59150-1-S-05-A Proximity Sensors

59150-1-S-05-A
Littelfuse
1: $8.83
697On Order

Mfr. Part No.
59150-1-S-05-A

Mouser Part No
934-59150-1-S-05-A

Proximity Sensors 59150-1-S-05-A Proximity Sensors

Datasheet

697On Order

$8.83

$6.81

$5.91

$5.56

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches 175V 5WATTS

MDRR-DT-30-35-F
Littelfuse
1: $7.13
1,982On Order

Mfr. Part No.
MDRR-DT-30-35-F

Mouser Part No
934-MDRR-DT-30-35-F

Magnetic/Reed Switches 175V 5WATTS

Datasheet

1,982On Order

$7.13

$6.03

$5.62

$5.06

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches CO 10-15AT SMT

MDSM-DTB-10-15
Littelfuse
1: $8.13
915Expected 8/5/2026

Mfr. Part No.
MDSM-DTB-10-15

Mouser Part No
934-MDSM-DTB-10-15

Magnetic/Reed Switches CO 10-15AT SMT

Datasheet

915Expected 8/5/2026

$8.13

$7.09

$6.71

$6.13

View

Min.: 1
Mult.: 1

Reed Relays HE3321C2400 RELAY

HE3321C2400
Littelfuse
Restricted Availability
Factory Special Order

Mfr. Part No.
HE3321C2400

Mouser Part No
934-HE3321C2400

Factory Special Order

Reed Relays HE3321C2400 RELAY

Datasheet

More Info Available

Restricted Availability

Reed Relays REED RELAY

HE3621A0510
Littelfuse
Restricted Availability
Factory Special Order

Mfr. Part No.
HE3621A0510

Mouser Part No
934-HE3621A0510

Factory Special Order

Reed Relays REED RELAY

Datasheet

More Info Available

Restricted Availability

Reed Relays HE721C2410 REED RELAY

HE721C2410
Littelfuse
Restricted Availability
Factory Special Order

Mfr. Part No.
HE721C2410

Mouser Part No
934-HE721C2410

Factory Special Order

Reed Relays HE721C2410 REED RELAY

Datasheet

More Info Available

Restricted Availability

Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET

57125-000
Littelfuse
1: $2.56
616Expected 3/6/2026

Mfr. Part No.
57125-000

Mouser Part No
934-57125-000

Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET

Datasheet

616Expected 3/6/2026

$2.56

$2.29

$2.20

$2.11

View

Min.: 1
Mult.: 1

Proximity Sensors 59025 020 PROX SENSOR

59025-020
Littelfuse
1: $3.27
489Expected 13/5/2026

Mfr. Part No.
59025-020

Mouser Part No
934-59025-020

Proximity Sensors 59025 020 PROX SENSOR

489Expected 13/5/2026

$3.27

$2.56

$2.22

$2.06

View

Min.: 1
Mult.: 1

Proximity Sensors NO 17-23AT 1m TIN 59025 Firecracker

59025-1-T-05-A
Littelfuse
1: $1.52
700Expected 4/6/2026

Mfr. Part No.
59025-1-T-05-A

Mouser Part No
934-59025-1-T-05-A

Proximity Sensors NO 17-23AT 1m TIN 59025 Firecracker

Datasheet

700Expected 4/6/2026

$1.52

$1.19

$1.06

$1.02

View

Min.: 1
Mult.: 1

Proximity Sensors NO 22-28AT 1m TIN 59025 Firecracker

59025-1-U-05-A
Littelfuse
1: $3.84
500Expected 19/5/2026

Mfr. Part No.
59025-1-U-05-A

Mouser Part No
934-59025-1-U-05-A

Proximity Sensors NO 22-28AT 1m TIN 59025 Firecracker

Datasheet

500Expected 19/5/2026

$3.84

$3.48

$3.34

$3.20

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches 59170-1-T-00-A SENS

59170-1-T-00-A
Littelfuse
1: $3.13
722Expected 31/3/2026

Mfr. Part No.
59170-1-T-00-A

Mouser Part No
934-59170-1-T-00-A

Magnetic/Reed Switches 59170-1-T-00-A SENS

Datasheet

722Expected 31/3/2026

$3.13

$2.63

$2.45

$2.17

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MLRR-4 17-28

MLRR-4-17-28
Littelfuse
1: $1.77
828Expected 4/5/2026

Mfr. Part No.
MLRR-4-17-28

Mouser Part No
934-MLRR-417-28

Magnetic/Reed Switches MLRR-4 17-28

Datasheet

828Expected 4/5/2026

$1.77

$1.50

$1.40

$1.24

View

Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE3621A1200
Littelfuse
Restricted Availability
Factory Special Order

Mfr. Part No.
HE3621A1200

Mouser Part No
934-HE3621A1200

Factory Special Order

Reed Relays REED RELAY

Datasheet

More Info Available

Restricted Availability

Board Mount Temperature Sensors 6 OHM 600MW-HD 100A PTC

RF4819-000
Littelfuse
20,000: $0.379
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
RF4819-000

Mouser Part No
576-RF4819-000

Board Mount Temperature Sensors 6 OHM 600MW-HD 100A PTC

Datasheet

Non-Stocked Lead-Time 11 Weeks

Cut Tape

$0.379

Min.: 20,000
Mult.: 4,000

Reel: 4,000

Magnetic/Reed Switches MDSM-10B 5430 10-25

MDSM-10B-10-25
Littelfuse
1: $1.97
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-10B-10-25

Mouser Part No
934-MDSM-10B10-25

Magnetic/Reed Switches MDSM-10B 5430 10-25

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.97

$1.56

$1.38

$1.26

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MDSM-10B 5430 15-20

MDSM-10B-15-20
Littelfuse
1,000: $1.14
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-10B-15-20

Mouser Part No
934-MDSM-10B15-20

Magnetic/Reed Switches MDSM-10B 5430 15-20

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.14

$1.05

$1.02

Min.: 1,000
Mult.: 100

Magnetic/Reed Switches MDSM-10B 5430 20-25

MDSM-10B-20-25
Littelfuse
1,000: $1.15
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-10B-20-25

Mouser Part No
934-MDSM-10B20-25

Magnetic/Reed Switches MDSM-10B 5430 20-25

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.15

$1.07

$1.02

Min.: 1,000
Mult.: 100

Magnetic/Reed Switches MDSM-4B 5276 17-23

MDSM-4B-17-23
Littelfuse
1: $1.81
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4B-17-23

Mouser Part No
934-MDSM-4B17-23

Magnetic/Reed Switches MDSM-4B 5276 17-23

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.81

$1.43

$1.27

$1.16

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MDSM-4B 5276 22-28

MDSM-4B-22-28
Littelfuse
1,000: $1.05
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4B-22-28

Mouser Part No
934-MDSM-4B22-28

Magnetic/Reed Switches MDSM-4B 5276 22-28

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.05

$0.96

$0.931

Min.: 1,000
Mult.: 100

Magnetic/Reed Switches MDSM-4B 5276 27-33

MDSM-4B-27-33
Littelfuse
1,000: $1.04
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4B-27-33

Mouser Part No
934-MDSM-4B27-33

Magnetic/Reed Switches MDSM-4B 5276 27-33

Datasheet

Non-Stocked Lead-Time 11 Weeks

$1.04

$0.962

$0.931

Min.: 1,000
Mult.: 100

Magnetic/Reed Switches MDSM-4R 5277 17-28

MDSM-4R-17-28
Littelfuse
3,000: $0.986
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4R-17-28

Mouser Part No
934-MDSM-4R17-28

Magnetic/Reed Switches MDSM-4R 5277 17-28

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

$0.986

$0.942

Min.: 3,000
Mult.: 3,000

Reel: 3,000

Magnetic/Reed Switches MDSM-4R 5277 22-28

MDSM-4R-22-28
Littelfuse
3,000: $0.976
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4R-22-28

Mouser Part No
934-MDSM-4R22-28

Magnetic/Reed Switches MDSM-4R 5277 22-28

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

$0.976

$0.942

Min.: 3,000
Mult.: 3,000

Reel: 3,000

Magnetic/Reed Switches MDSM-4R 22-33

MDSM-4R-22-33
Littelfuse
3,000: $0.967
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MDSM-4R-22-33

Mouser Part No
934-MDSM-4R22-33

Magnetic/Reed Switches MDSM-4R 22-33

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

$0.967

$0.942

Min.: 3,000
Mult.: 3,000

Reel: 3,000