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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 MDSM-DTB 20-25

MDSM-DTB-20-25
Littelfuse
1: $6.279
259In Stock

Mfr. Part #
MDSM-DTB-20-25

Mouser Part #
934-MDSM-DTB20-25

Littelfuse

Magnetic / Reed Switches MDSM-DTB 20-25

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Datasheet

259In Stock

$6.279

$5.364

$5.027

$4.543

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Min.: 1
Mult.: 1

Magnetic / Reed Switches MLRR-3 27-33

MLRR-3-27-33
Littelfuse
1: $1.504
988In Stock

Mfr. Part #
MLRR-3-27-33

Mouser Part #
934-MLRR-327-33

Littelfuse

Magnetic / Reed Switches MLRR-3 27-33

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Datasheet

988In Stock

$1.504

$1.325

$1.230

$1.094

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Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE722A1210
Littelfuse
1: $4.575
5.924In Stock
Factory Special Order

Mfr. Part #
HE722A1210

Mouser Part #
934-HE722A1210

Factory Special Order

Littelfuse

Reed Relays REED RELAY

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Datasheet

5.924In Stock

$4.575

$4.081

$3.891

$3.755

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories MAGNET ACTUATOR FOR 59140 AND 59141

57140-000
Littelfuse
1: $2.219
24.818In Stock
17.460Expected 9/30/2026

Mfr. Part #
57140-000

Mouser Part #
934-57140-000

Littelfuse

Sensor Hardware & Accessories MAGNET ACTUATOR FOR 59140 AND 59141

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Datasheet

24.818In Stock

17.460Expected 9/30/2026

$2.219

$1.977

$1.777

$1.704

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories ACTUATOR FOR 59150 SERIES

57150-000
Littelfuse
1: $2.861
18.498In Stock

Mfr. Part #
57150-000

Mouser Part #
934-57150-000

Littelfuse

Sensor Hardware & Accessories ACTUATOR FOR 59150 SERIES

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Datasheet

18.498In Stock

$2.861

$2.556

$2.145

$2.009

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Min.: 1
Mult.: 1

Magnetic / Reed Switches PROX SENSOR PCB MT NORMAL OPEN

59045-010
Littelfuse
1: $2.661
10.211In Stock

Mfr. Part #
59045-010

Mouser Part #
934-59045-010

Littelfuse

Magnetic / Reed Switches PROX SENSOR PCB MT NORMAL OPEN

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Datasheet

10.211In Stock

$2.661

$2.240

$2.082

$1.756

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Min.: 1
Mult.: 1

Proximity Sensors Actuator for 59140 and 59141

59140-010
Littelfuse
1: $4.217
6.161In Stock

Mfr. Part #
59140-010

Mouser Part #
934-59140-010

Littelfuse

Proximity Sensors Actuator for 59140 and 59141

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Datasheet

6.161In Stock

$4.217

$4.102

$3.534

$3.271

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Min.: 1
Mult.: 1

Magnetic / Reed Switches SWITCH REED

HA15-2-22-28
Littelfuse
1: $2.450
14.875In Stock

Mfr. Part #
HA15-2-22-28

Mouser Part #
934-HA15-222-28

Littelfuse

Magnetic / Reed Switches SWITCH REED

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Datasheet

14.875In Stock

$2.450

$2.072

$1.914

$1.714

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Min.: 1
Mult.: 1

Reed Relays HE3621A6012 REED RELAY

HE3621A6012
Littelfuse
1: $2.766
2.396In Stock
Factory Special Order

Mfr. Part #
HE3621A6012

Mouser Part #
934-HE3621A6012

Factory Special Order

Littelfuse

Reed Relays HE3621A6012 REED RELAY

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Datasheet

2.396In Stock

$2.766

$1.735

$1.693

Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE721C1210
Littelfuse
1: $4.953
2.845In Stock
Factory Special Order

Mfr. Part #
HE721C1210

Mouser Part #
934-HE721C1210

Factory Special Order

Littelfuse

Reed Relays REED RELAY

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Datasheet

2.845In Stock

$4.953

$4.407

$4.207

$4.070

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Min.: 1
Mult.: 1

Reed Relays 5V Standard Coil Suppression Diode

HE721E0510
Littelfuse
1: $10.433
1.862In Stock
Factory Special Order

Mfr. Part #
HE721E0510

Mouser Part #
934-HE721E0510

Factory Special Order

Littelfuse

Reed Relays 5V Standard Coil Suppression Diode

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Datasheet

1.862In Stock

$10.433

$8.561

$7.951

$7.299

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories Actuator for Cylindrical with Retaining Ribs

57041-000
Littelfuse
1: $2.514
346In Stock

Mfr. Part #
57041-000

Mouser Part #
576-57041-000

Littelfuse

Sensor Hardware & Accessories Actuator for Cylindrical with Retaining Ribs

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Datasheet

346In Stock

$2.514

$2.240

$2.019

$1.935

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 55100 3H02D HALL SENSOR

55100-3H-02-D
Littelfuse
1: $11.169
598In Stock

Mfr. Part #
55100-3H-02-D

Mouser Part #
934-55100-3H-02-D

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 55100 3H02D HALL SENSOR

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Datasheet

598In Stock

$11.169

$10.138

$9.749

$9.286

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 55100 3M03A HALL SENSOR

55100-3M-03-A
Littelfuse
1: $9.244
1.139In Stock
1.000Expected 8/24/2026

Mfr. Part #
55100-3M-03-A

Mouser Part #
934-55100-3M-03-A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 55100 3M03A HALL SENSOR

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Datasheet

1.139In Stock

1.000Expected 8/24/2026

$9.244

$8.361

$8.035

$7.646

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 55100 2M02A HALL SENSOR

55100-2M-02-A
Littelfuse
1: $8.435
258In Stock
500Expected 11/5/2026

Mfr. Part #
55100-2M-02-A

Mouser Part #
934-551002M02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 55100 2M02A HALL SENSOR

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Datasheet

258In Stock

500Expected 11/5/2026

$8.435

$7.635

$7.330

$6.973

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MNT PROX SEN 3WIRE

55100-3M-02-A
Littelfuse
1: $8.435
573In Stock
700Expected 3/22/2027

Mfr. Part #
55100-3M-02-A

Mouser Part #
934-551003M02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MNT PROX SEN 3WIRE

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Datasheet

573In Stock

700Expected 3/22/2027

$8.435

$7.625

$7.330

$6.973

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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: $14.682
417In Stock

Mfr. Part #
55100-AP-02-A

Mouser Part #
934-55100AP02A

Littelfuse

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

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Datasheet

417In Stock

$14.682

$13.356

$12.873

$12.284

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial HALL EFF GEARTOOTH SPEED SENS

55505-00-02-A
Littelfuse
1: $35.063
522In Stock
2.000On Order

Mfr. Part #
55505-00-02-A

Mouser Part #
934-555050002A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial HALL EFF GEARTOOTH SPEED SENS

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Datasheet

522In Stock

2.000On Order

$35.063

$32.013

$31.193

$30.762

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial HALL EFF GEARTOOTH SPEED SENS

55505-00-02-B
Littelfuse
1: $38.387
76In Stock
1.100On Order

Mfr. Part #
55505-00-02-B

Mouser Part #
934-555050002B

Littelfuse

Hall Effect / Magnetic Sensors - Industrial HALL EFF GEARTOOTH SPEED SENS

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Datasheet

76In Stock

1.100On Order

$38.387

$35.284

$34.117

$32.729

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories ACTUATOR FOR 59010 /59020 /59021

57020-000
Littelfuse
1: $5.932
411In Stock

Mfr. Part #
57020-000

Mouser Part #
934-57020-000

Littelfuse

Sensor Hardware & Accessories ACTUATOR FOR 59010 /59020 /59021

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Datasheet

411In Stock

$5.932

$5.343

$5.122

$4.859

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories Actuator for 59025 Series

57025-000
Littelfuse
1: $4.859
3.840In Stock

Mfr. Part #
57025-000

Mouser Part #
934-57025-000

Littelfuse

Sensor Hardware & Accessories Actuator for 59025 Series

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Datasheet

3.840In Stock

$4.859

$4.365

$4.186

$3.891

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories Actuator For 59040 Series

57040-000
Littelfuse
1: $5.248
1.173In Stock

Mfr. Part #
57040-000

Mouser Part #
934-57040-000

Littelfuse

Sensor Hardware & Accessories Actuator For 59040 Series

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Datasheet

1.173In Stock

$5.248

$4.722

$4.522

$4.291

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories 57050 000 ACTUATOR

57050-000
Littelfuse
1: $4.396
1.333In Stock

Mfr. Part #
57050-000

Mouser Part #
934-57050-000

Littelfuse

Sensor Hardware & Accessories 57050 000 ACTUATOR

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Datasheet

1.333In Stock

$4.396

$3.954

$3.786

$3.586

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Min.: 1
Mult.: 1

Sensor Hardware & Accessories 57060 000 ACTUATOR

57060-000
Littelfuse
1: $15.123
337In Stock

Mfr. Part #
57060-000

Mouser Part #
934-57060-000

Littelfuse

Sensor Hardware & Accessories 57060 000 ACTUATOR

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Datasheet

337In Stock

$15.123

$13.777

$13.272

$12.715

Min.: 1
Mult.: 1

Sensor Hardware & Accessories HARDWARE ACTUATOR MAGNET

57135-000
Littelfuse
1: $2.629
8.809In Stock
10.400Expected 12/14/2026

Mfr. Part #
57135-000

Mouser Part #
934-57135-000

Littelfuse

Sensor Hardware & Accessories HARDWARE ACTUATOR MAGNET

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Datasheet

8.809In Stock

10.400Expected 12/14/2026

$2.629

$2.345

$2.103

$1.935

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Min.: 1
Mult.: 1

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