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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 #

Magnetic/Reed Switches 175V 5WATTS

MDRR-DT-30-35-F
Littelfuse
1: $5.13
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

$5.13

$4.34

$4.04

$3.64

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches CO 10-15AT SMT

MDSM-DTB-10-15
Littelfuse
1: $5.85
915Expected 08/05/2026

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

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

Magnetic/Reed Switches CO 10-15AT SMT

Datasheet

915Expected 08/05/2026

$5.85

$5.10

$4.83

$4.41

View

Min.: 1
Mult.: 1

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: $1.84
616Expected 03/06/2026

Mfr. Part No.
57125-000

Mouser Part No
934-57125-000

Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET

Datasheet

616Expected 03/06/2026

$1.84

$1.65

$1.58

$1.52

View

Min.: 1
Mult.: 1

Proximity Sensors 59025 020 PROX SENSOR

59025-020
Littelfuse
1: $2.35
489Expected 13/05/2026

Mfr. Part No.
59025-020

Mouser Part No
934-59025-020

Proximity Sensors 59025 020 PROX SENSOR

489Expected 13/05/2026

$2.35

$1.84

$1.63

$1.49

View

Min.: 1
Mult.: 1

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

59025-1-T-05-A
Littelfuse
1: $1.06
700Expected 04/06/2026

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 04/06/2026

$1.06

$0.841

$0.749

$0.684

View

Min.: 1
Mult.: 1

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

59025-1-U-05-A
Littelfuse
1: $2.76
500Expected 19/05/2026

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 19/05/2026

$2.76

$2.50

$2.40

$2.30

View

Min.: 1
Mult.: 1

Proximity Sensors 200V 1000mm TINNED LEADS

59140-1-S-05-A
Littelfuse
1: $6.43
237Expected 11/06/2026

Mfr. Part No.
59140-1-S-05-A

Mouser Part No
934-59140-1-S-05-A

Proximity Sensors 200V 1000mm TINNED LEADS

Datasheet

237Expected 11/06/2026

$6.43

$4.96

$4.42

$4.06

View

Min.: 1
Mult.: 1

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

59170-1-T-00-A
Littelfuse
1: $2.59
722Expected 31/03/2026

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 31/03/2026

$2.59

$2.26

$2.14

$1.95

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MDSR-7 15-20

MDSR-7-15-20
Littelfuse
1: $1.19
347Expected 21/05/2026

Mfr. Part No.
MDSR-7-15-20

Mouser Part No
934-MDSR-715-20

Magnetic/Reed Switches MDSR-7 15-20

Datasheet

347Expected 21/05/2026

$1.19

$1.03

$0.95

$0.846

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MLRR-4 17-28

MLRR-4-17-28
Littelfuse
1: $1.27
828Expected 23/02/2026

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

Mouser Part No
934-MLRR-417-28

Magnetic/Reed Switches MLRR-4 17-28

Datasheet

828Expected 23/02/2026

$1.27

$1.08

$1.01

$0.894

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

Proximity Sensors 59090-00-02-A SENS

59090-00-02-A
Littelfuse
1: $17.00
Lead-Time 29 Weeks

Mfr. Part No.
59090-00-02-A

Mouser Part No
934-59090-00-02-A

Proximity Sensors 59090-00-02-A SENS

Datasheet

Lead-Time 29 Weeks

$17.00

$13.95

$13.53

$12.28

View

Min.: 1
Mult.: 1

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

RF4819-000
Littelfuse
20,000: $0.273
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

$0.273

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

Reel: 4,000

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

MDSM-10B-10-25
Littelfuse
1: $1.42
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

$1.42

$1.12

$0.992

$0.906

View

Min.: 1
Mult.: 1

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

MDSM-10B-15-20
Littelfuse
1,000: $0.824
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

$0.824

$0.771

$0.736

Min.: 1,000
Mult.: 100

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

MDSM-10B-20-25
Littelfuse
1,000: $0.824
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

$0.824

$0.771

$0.736

Min.: 1,000
Mult.: 100

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

MDSM-4B-17-23
Littelfuse
1,000: $0.757
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

$0.757

$0.708

$0.675

Min.: 1,000
Mult.: 100

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

MDSM-4B-22-28
Littelfuse
1,000: $0.757
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

$0.757

$0.708

$0.675

Min.: 1,000
Mult.: 100

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

MDSM-4B-27-33
Littelfuse
1,000: $0.757
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

$0.757

$0.708

$0.675

Min.: 1,000
Mult.: 100

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

MDSM-4R-17-28
Littelfuse
3,000: $0.709
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

$0.709

$0.678

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

Reel: 3,000

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

MDSM-4R-22-28
Littelfuse
3,000: $0.709
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

$0.709

$0.678

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

Reel: 3,000

Magnetic/Reed Switches MDSM-4R 22-33

MDSM-4R-22-33
Littelfuse
3,000: $0.709
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

$0.709

$0.678

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

Reel: 3,000

Magnetic/Reed Switches MDSM-4R 5277 27-33

MDSM-4R-27-33
Littelfuse
3,000: $0.709
Non-Stocked Lead-Time 11 Weeks

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

Mouser Part No
934-MDSM-4R27-33

Magnetic/Reed Switches MDSM-4R 5277 27-33

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

$0.709

$0.678

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

Reel: 3,000