59140 Series - Miniature Flange Mount Reed Sensor

Series: 59140
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

A miniature flange mount reed sensor occupying only 3.22cm2 (0.500in2) board space with a choice of normally open, normally open high-voltage, normally closed or changeover contacts. Its case design enables screw or adhesive mounting. Wires exit from top right-hand side. Also available with left-hand exit (59141 series). Capable of switching up to 265Vac/300Vdc at 10VA. Available with a range of sensitivity and cable length options. Ideally suited for position and limit sensing, security, window and door alarm systems and linear actuator applications. Functions best with the 57140 or 57141 actuator.

Note: The 57140 and 57141 actuators are sold separately.

Features:

  • Magnetically-operated proximity sensor
  • Operates through non-ferrous materials such as wood, plastic or aluminum
  • Compact size requires only 3.2cm2 board space
  • Screw-down or adhesive mounting
  • Customer-defined sensitivity
  • Choice of cable length and connector

Benefits:

  • Well suited for usage in high-moisture and contaminated environments
  • Reed contacts last for millions of operating cycles under micro-controller voltage and current logic-level loads
  • Simple installation and adjustment

Applications:

  • Position and limit switching
  • Security
  • Linear actuators
  • Door switch

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Access specifications, certifications, check availability and order parts below

Catalog #Switching Power (W)Switching Voltage (V DC)Switching Current (A DC)Switching Voltage (V AC)Switching Current (A AC)Breakdown Voltage (V DC)Max Contact Resistance (Ω)Magnetic Sensitivity (AT)Nominal Activate Distance (mm)Switch TypeMax Operate Time (ms)Max Release Time (ms)Operating TemperatureSymbols & ModelsStockSamplesCompare
59140-1-S102000.51400.352500.212 to 1810.4A:SPST-NO11-40° to 105°C
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59140-1-T102000.51400.352500.217 to 238.4A:SPST-NO11-40° to 105°C
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Order
59140-1-U102000.51400.352500.222 to 287.2A:SPST-NO11-40° to 105°C
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59140-1-V102000.51400.352500.227 to 336.3A:SPST-NO11-40° to 105°C
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CheckOrder
59140-2-T102000.42650.34000.217 to 238.4A:SPST-NO11-20° to 105°CCheckOrder
59140-2-U102000.42650.34000.222 to 287.2A:SPST-NO11-20° to 105°COrder
59140-2-V102000.42650.34000.227 to 336.3A:SPST-NO11-20° to 105°C
59140-3-S51750.251200.182000.215 to 2011.6C:SPDT-CO33-40° to 105°COrder
59140-3-T51750.251200.182000.220 to 2510.6C:SPDT-CO33-40° to 105°COrder
59140-3-U51750.251200.182000.225 to 3010C:SPDT-CO33-40° to 105°C
59140-4-S51750.251200.182000.215 to 2011.6B:SPST-NC33-40° to 105°COrder
59140-4-T51750.251200.182000.220 to 2510.6B:SPST-NC33-40° to 105°CCheckOrder
59140-4-U51750.251200.182000.225 to 3010B:SPST-NC33-40° to 105°COrder
Catalog # Certificates
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59140-1-S cRUiconURicon
59140-1-T cRUiconURicon
59140-1-U cRUiconURicon
59140-1-V cRUiconURicon
59140-2-T cRUiconURicon
59140-2-U cRUiconURicon
59140-2-V cRUiconURicon
59140-3-S cRUiconURicon
59140-3-T cRUiconURicon
59140-3-U cRUiconURicon
59140-4-S cRUiconURicon
59140-4-T cRUiconURicon
59140-4-U cRUiconURicon

pdficon Position and Level Sensing in Washing Machines

A most integral appliance in any home is a washing machine. Washing machines have helped made the chore of cleaning clothes quite effortless.
pdficon Reed Switch and Reed Sensor Activation Application Note

Although a reed switch can be activated by placing it inside an electrical coil many reed switches and reed sensors are used for proximity sensing and are activated by a magnet.
pdficon Inductive Load Arc Suppression Application Note

When a reed switch or reed sensor is used to control an inductive device (relay coil solenoid transformer small motor etc.)
pdficon Vibration Testing and Precautions Application Note

Littelfuse tests sinusoidal vibration according to Mil. Std. 202G Method 204D Test Condition G (10 ? 2000 Hz frequency sweep at 30 G or 0.06 inch double amplitude whichever is less).
pdficon Capacitive Loads Application Note

When there is significant capacitance in a reed sensor reed relay or reed switch circuit the peak current and energy switched by the reed contacts should be considered.
pdficon Reed Switch Extended Shock Capabilities Application Note

The maximum shock specifications in the Littelfuse catalog are very conservative for most switches smaller than the DRxxxx type. T
pdficon Rice Cooker Lid Lock Application Note

The position sensing lid lock ensures that the lid is securely locked in place.
pdficon Flow Sensing in Tankless Water Heaters Application Note

Reed switches and sensors are highly effective solutions for flow sensing applications that can be used for detecting the presence of fluid flow in a system or even measure the rate of fluid flow.
pdficon Littelfuse Door and Window Sensor Design Guide

pdficon Littelfuse Reed Sensors 59140 datasheet

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
59140-1-S-05-F 59140-1-S-05-F SENSOR RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-S-02-A 59140-1-S-02-A SENS RoHS No 08/24/2016 PbFree No CoC_RoHS10_59140-1-S-02-A REACH_SVHC Declaration_59140-1-S-02-A
Does not Contain
59140-1-S-03-A 59140-1-S-03-A SENS RoHS No 08/17/2018 PbFree No 08/17/2018 CoC_RoHS10_59140-1-S-03-A REACH209_Declaration_59140-1-S-03-A No
08/17/2018		 Does not Contain
59140-1-S-04-E 59140-1-S-04-E SENSOR RoHS No 01/26/2016 PbFree No 01/26/2016 No
01/26/2016
59140-1-S-03-F 59140-1-S-03-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 CoC_RoHS10_59140-1-S-03-F No
02/21/2019
59140-1-S-04-F 59140-1-S-04-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-S-05-A 59140-1-S-05-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 CoC_RoHS10_59140-1-S-05-A REACH211_Declaration_59140-1-S-05-A No
02/21/2019		 Does not Contain
59140-1-T-02-F 59140-1-T-02-F SENSOR RoHS No 11/30/2017 PbFree No 11/30/2017 CoC_RoHS10_59140-1-T-02-F REACH_SVHC Declaration_59140-1-T-02-F No
11/30/2017		 Does not Contain
59140-1-T-03-F 59140-1-T-03-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-T-05-F 59140-1-T-05-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-T-05-A 59140-1-T-05-A SENS RoHS No 11/21/2018 PbFree No 11/21/2018 CoC_RoHS10_59140-1-T-05-A No
11/21/2018
59140-1-T-02-A 59140-1-T-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-U-02-A 59140-1-U-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-U-05-A 59140-1-U-05-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-U-05-F 59140-1-U-05-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-V-05-F 59140-1-V-05-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-V-05-A 59140-1-V-05-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 REACH_SVHC Declaration_59140-1-V-05-A No
02/21/2019		 Does not Contain
59140-1-V-01-F 59140-1-V-01-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-1-V-02-A 59140-1-V-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 CoC_RoHS10_59140-1-V-02-A No
02/21/2019
59140-2-T-02-F 59140-2-T-02-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 CoC_RoHS10_59140-2-T-02-F No
02/21/2019
59140-2-U-02-A 59140-2-U-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-3-S-02-A 59140-3-S-02-A SENS RoHS No 02/05/2019 PbFree No 02/05/2019 CoC_RoHS10_59140-3-S-02-A REACH209_Declaration_59140-3-S-02-A No
02/05/2019		 Does not Contain
59140-3-S-02-F 59140-3-S-02-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-3-T-02-F 59140-3-T-02-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-3-T-02-A 59140-3-T-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-4-S-05-A 59140-4-S-05-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-4-S-02-A 59140-4-S-02-A SENS RoHS No 02/17/2016 PbFree No 02/17/2016 REACH_SVHC Declaration_59140-4-S-02-A No
02/17/2016		 Does not Contain
59140-4-S-02-F 59140-4-S-02-F SENS RoHS No 02/20/2017 PbFree No 02/20/2017 CoC_RoHS10_59140-4-S-02-F REACH181_Declaration_59140-4-S-02-F No
02/20/2017		 Does not Contain
59140-4-S-05-F 59140-4-S-05-F SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-4-T-02-A 59140-4-T-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-4-T-02-F 59140-4-T-02-F SENSOR RoHS No 02/21/2019 PbFree No 02/21/2019 No
02/21/2019
59140-4-U-02-A 59140-4-U-02-A SENS RoHS No 02/21/2019 PbFree No 02/21/2019 CoC_RoHS10_59140-4-U-02-A REACH209_Declaration_59140-4-U-02-A No
02/21/2019		 Does not Contain
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