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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 #

Reed Relays HE3321A2400 REED RELAY

HE3321A2400
Littelfuse
1: $2.52
551In Stock
Factory Special Order

Mfr. Part No.
HE3321A2400

Mouser Part No
934-HE3321A2400

Factory Special Order

Littelfuse

Reed Relays HE3321A2400 REED RELAY

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Datasheet

551In Stock

$2.52

$2.25

$2.15

$1.98

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Min.: 1
Mult.: 1

Reed Relays HE3351A2400

HE3351A2400
Littelfuse
1: $3.63
549In Stock
Factory Special Order

Mfr. Part No.
HE3351A2400

Mouser Part No
934-HE3351A2400

Factory Special Order

Littelfuse

Reed Relays HE3351A2400

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Datasheet

549In Stock

$3.63

$3.24

$3.09

$2.98

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Min.: 1
Mult.: 1

Reed Relays HE3621A0540

HE3621A0540
Littelfuse
1: $2.67
20In Stock
Factory Special Order

Mfr. Part No.
HE3621A0540

Mouser Part No
934-HE3621A0540

Factory Special Order

Littelfuse

Reed Relays HE3621A0540

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Datasheet

20In Stock

$2.67

$2.38

$2.27

$2.20

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Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE3621A1250
Littelfuse
1: $3.16
132In Stock
Factory Special Order

Mfr. Part No.
HE3621A1250

Mouser Part No
934-HE3621A1250

Factory Special Order

Littelfuse

Reed Relays REED RELAY

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Datasheet

132In Stock

$3.16

$2.80

$2.70

$2.65

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Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE721A1210
Littelfuse
1: $2.48
1,047In Stock
Factory Special Order

Mfr. Part No.
HE721A1210

Mouser Part No
934-HE721A1210

Factory Special Order

Littelfuse

Reed Relays REED RELAY

Datasheet

1,047In Stock

$2.48

$2.21

$2.11

$2.04

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Min.: 1
Mult.: 1

Reed Relays HE721C0530 REED RELAY

HE721C0530
Littelfuse
1: $7.64
12In Stock
Factory Special Order

Mfr. Part No.
HE721C0530

Mouser Part No
934-HE721C0530

Factory Special Order

Littelfuse

Reed Relays HE721C0530 REED RELAY

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Datasheet

12In Stock

$7.64

$6.81

$6.50

$6.28

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Min.: 1
Mult.: 1

Reed Relays HE722A2400 REED RELAY

HE722A2400
Littelfuse
1: $3.62
307In Stock
Factory Special Order

Mfr. Part No.
HE722A2400

Mouser Part No
934-HE722A2400

Factory Special Order

Littelfuse

Reed Relays HE722A2400 REED RELAY

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Datasheet

307In Stock

$3.62

$3.23

$3.09

$2.99

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 55140 AP02A HALL SENSOR

55140-AP-02-A
Littelfuse
1: $10.08
16In Stock

Mfr. Part No.
55140-AP-02-A

Mouser Part No
934-55140AP02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 55140 AP02A HALL SENSOR

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Datasheet

16In Stock

$10.08

$9.24

$8.93

$8.63

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Min.: 1
Mult.: 1

Proximity Sensors NO 17-23AT 300mm TIN

59022-1-T-02-A
Littelfuse
1: $3.78
39In Stock

Mfr. Part No.
59022-1-T-02-A

Mouser Part No
934-59022-1-T-02-A

Littelfuse

Proximity Sensors NO 17-23AT 300mm TIN

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Datasheet

39In Stock

$3.78

$3.31

$2.87

$2.55

View

Min.: 1
Mult.: 1

Proximity Sensors CO 20-25AT 300mm TIN

59022-3-T-02-A
Littelfuse
1: $5.48
152In Stock

Mfr. Part No.
59022-3-T-02-A

Mouser Part No
934-59022-3-T-02-A

Littelfuse

Proximity Sensors CO 20-25AT 300mm TIN

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Datasheet

152In Stock

$5.48

$4.57

$4.45

$4.05

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Min.: 1
Mult.: 1

Proximity Sensors 59150 020 PROX SENSOR

59150-020
Littelfuse
1: $3.90
14In Stock

Mfr. Part No.
59150-020

Mouser Part No
934-59150-020

Littelfuse

Proximity Sensors 59150 020 PROX SENSOR

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Datasheet

14In Stock

$3.90

$3.03

$2.69

$2.47

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches MDSM-4B 5276 12-18

MDSM-4B-12-18
Littelfuse
1: $1.48
25In Stock

Mfr. Part No.
MDSM-4B-12-18

Mouser Part No
934-MDSM-4B12-18

Littelfuse

Magnetic/Reed Switches MDSM-4B 5276 12-18

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Datasheet

25In Stock

$1.48

$1.24

$1.19

$1.07

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Min.: 1
Mult.: 1

Magnetic/Reed Switches NO 25-30AT

MDSR-10-25-30
Littelfuse
1: $1.30
985In Stock

Mfr. Part No.
MDSR-10-25-30

Mouser Part No
934-MDSR-10-25-30

Littelfuse

Magnetic/Reed Switches NO 25-30AT

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Datasheet

985In Stock

$1.30

$1.11

$1.03

$0.912

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 500mm TIN

55100-3H-04-A
Littelfuse
1: $6.77
5,492On Order

Mfr. Part No.
55100-3H-04-A

Mouser Part No
934-55100-3H-04-A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 500mm TIN

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Datasheet

5,492On Order

$6.77

$6.50

$5.96

$5.76

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MT PROX SEN ANALOG

55100-AP-02-A
Littelfuse
1: $16.55
300Expected 25/02/2026

Mfr. Part No.
55100-AP-02-A

Mouser Part No
934-55100AP02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MT PROX SEN ANALOG

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Datasheet

300Expected 25/02/2026

$16.55

$14.40

$13.61

$12.48

Min.: 1
Mult.: 1

Proximity Sensors PROX SENS CHANGE OVER UNTINNED

59025-3-T-02-F
Littelfuse
1: $5.87
500Expected 13/04/2026

Mfr. Part No.
59025-3-T-02-F

Mouser Part No
934-59025-3-T-02-F

Littelfuse

Proximity Sensors PROX SENS CHANGE OVER UNTINNED

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Datasheet

500Expected 13/04/2026

$5.87

$4.53

$4.03

$3.71

Min.: 1
Mult.: 1

Proximity Sensors NC 15-20AT 1m TIN 59025 Firecracker

59025-4-S-05-A
Littelfuse
1: $7.87
307Expected 28/05/2026

Mfr. Part No.
59025-4-S-05-A

Mouser Part No
934-59025-4-S-05-A

Littelfuse

Proximity Sensors NC 15-20AT 1m TIN 59025 Firecracker

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Datasheet

307Expected 28/05/2026

$7.87

$6.06

$5.40

$5.08

Min.: 1
Mult.: 1

Proximity Sensors NO 12-18AT Tinned Leads

59040-1-S-02-A
Littelfuse
1: $3.70
1,272On Order

Mfr. Part No.
59040-1-S-02-A

Mouser Part No
934-59040-1-S-02-A

Littelfuse

Proximity Sensors NO 12-18AT Tinned Leads

Learn More

Datasheet

1,272On Order

$3.70

$2.87

$2.55

$2.34

View

Min.: 1
Mult.: 1

Proximity Sensors CO 15-20AT Tinned Leads

59040-3-S-02-A
Littelfuse
1: $6.71
395Expected 10/03/2026

Mfr. Part No.
59040-3-S-02-A

Mouser Part No
934-59040-3-S-02-A

Littelfuse

Proximity Sensors CO 15-20AT Tinned Leads

Learn More

Datasheet

395Expected 10/03/2026

$6.71

$5.17

$4.61

$4.23

View

Min.: 1
Mult.: 1

Magnetic/Reed Switches 59050 020 SENSOR

59050-020
Littelfuse
1: $3.59
998Expected 04/06/2026

Mfr. Part No.
59050-020

Mouser Part No
934-59050-020

Littelfuse

Magnetic/Reed Switches 59050 020 SENSOR

Learn More

Datasheet

998Expected 04/06/2026

$3.59

$3.13

$2.96

$2.71

View

Min.: 1
Mult.: 1

Proximity Sensors 59060-3-S-05-A SENS

59060-3-S-05-A
Littelfuse
1: $15.52
600Expected 10/07/2026

Mfr. Part No.
59060-3-S-05-A

Mouser Part No
934-59060-3-S-05-A

Littelfuse

Proximity Sensors 59060-3-S-05-A SENS

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Datasheet

600Expected 10/07/2026

$15.52

$11.90

$10.66

$9.86

View

Min.: 1
Mult.: 1

Proximity Sensors 59070-1-T-02-A SENS

59070-1-T-02-A
Littelfuse
1: $4.57
591Expected 19/05/2026

Mfr. Part No.
59070-1-T-02-A

Mouser Part No
934-59070-1-T-02-A

Littelfuse

Proximity Sensors 59070-1-T-02-A SENS

Learn More

Datasheet

591Expected 19/05/2026

$4.57

$3.53

$3.14

$2.87

View

Min.: 1
Mult.: 1

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

59140-020
Littelfuse
1: $3.96
1,000On Order

Mfr. Part No.
59140-020

Mouser Part No
934-59140-020

Littelfuse

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

Learn More

Datasheet

1,000On Order

$3.96

$3.07

$2.73

$2.50

View

Min.: 1
Mult.: 1

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

59140-1-V-02-A
Littelfuse
1: $3.73
1,288Expected 07/07/2026

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

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

Littelfuse

Proximity Sensors PROX SENSOR MINI FLANGE MOUNT

Learn More

Datasheet

1,288Expected 07/07/2026

$3.73

$2.89

$2.57

$2.35

View

Min.: 1
Mult.: 1

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

59150-1-S-05-A
Littelfuse
1: $6.35
697On Order

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

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

Littelfuse

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

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Datasheet

697On Order

$6.35

$4.90

$4.25

$4.00

View

Min.: 1
Mult.: 1

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