Reed Sensors
Black
Black
Black
White
Black
Black
Actuator
m.
14.00
3.20x3.81 Typ.
Flange Mounting Sensor > 59140
59140 Miniature Flange Mount Sensor + 57140 Actuator
Description
Actuator
The 59140 is a miniature flange mounting reed sensor occupying only 3.22cm²
(0.500”²) board space with a choice of normally open, normally open high
voltage, normally closed or changeover contacts. It’s case design enables screw
or adhesive mounting and the wires exit from top right hand side. It is also
available with left hand exit - see 59141 Series. It is capable of switching up to
265Vac/300Vdc at 10VA. The 59140 functions best with the matching
actuator 57140-000.
Sensors
Agency Approvals
Agency Agency File Number
E61760
Note: Contact Littelfuse for specific agency approval ratings.
Dimensions
Dimensions in mm (inch)
6.00
(.236)
7.50
14.00
(.551)
(.295)
3.00
(.118)
3.20x3.81 Typ.
Slot (.126x.150)
(.433)
11.00
23.00
(.906)
Actuator
14.00
(.551)
Note: The 57140 Actuator is sold separately.
Features
• Magnetically operated position
sensor
• Customer defined sensitivity option
• Choice of cable length and
• RoHS compliant
Benefits
• Hermetically sealed, magnetically
operated contacts continue to
operate long after optical and other
technologies fail due to
contamination
• No standby power requirement
• Operates through non-ferrous
• Excellent for switching micro-
Applications
• Position and limit sensing
• Security system switch
• Linear actuators
• Door switch
connector
materials such as wood, plastic or
aluminium
controller logic level loads
Sensor (Two-wire version)
6.00
(.236)
7.50
3.00
(.118)
(.295)
(.551)
(Excluding Encapsulant)
11.00
Sensor
(.433)
Schematics Switch Type
Blue
3
Specifications are subject to change without notice.
23.00
(.906)
14.00
(.551)
300±10mm
(11.81±.394)
1 and 2
4
6.35 No
(.250)
littelfuse.com© 2019 Littelfuse Revised: 02/08/19
Reed Sensors
D
Flange Mounting Sensor > 59140
59140 Miniature Flange Mount Sensor + 57140 Actuator
Electrical Ratings
Contact Type
Normally
Open
Switch Type 1 2 3 4
Contact Rating
4
Voltage
4
Current
Resistance
5
1
Switching
Breakdown
Switching
Carry
Contact, Initial
Insulation
VA/Watt - max. 10 10 5 5
2
3
2
Vdc - max.
Vac - max.
Vdc - min.
Adc - max.
Aac - max.
Adc - max.
Ω - max.
Ω - min.
200
140
250
0.5
0.35
1.2
0.2
10
10
Capacitance Contact pF - typ. 0.3 0.2 0.3 0.3
Temperature Operating °C -40 to +105 -20 to +105 -40 to +105 -40 to +105
Normally Open
High Voltage
300
265
400
.40
0.30
1.4
0.2
10
10
Change
Over
175
120
200
0.25
0.18
1.5
0.2
9
10
Normally
Closed
175
120
200
0.25
0.18
1.5
0.2
10
9
Product Characteristics
Operate Time
Release Time
Shock
Vibration
Notes:
1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Breakdown Voltage - per MIL-STD-202, Method 301.
4. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
5. This resistance value is for 11.81mm wire length. Resistance changes when wire lengthens.
6. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II).
7. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.
8. For custom modifications to the wire length or size, or adding a special connector, please contact Littelfuse.
6
6
7
7
11ms ½ sine G - max. 100 100 50 50
50-2000 Hz G - max. 30 30 30 30
ms - max. 1.0 1.0 3.0 3.0
ms - max. 1.0 1.0 3.0 3.0
Sensitivity Options (Using 57140 Actuator)
Select Option S T U V
Switch Type
Pull-In
AT Range
Activate Distance-D
mm (inch)
Average
AT Range
1 Normally Open 12-18 10.4 (.410) 17-23 8.4 (.330) 22-28 7.2 (.283) 27-33 6.3 (.248)
2 High Voltage -- -- 17-23 8.4 (.330) 22-28 7.2 (.283) 27-33 6.3 (.248)
3 Change Over 15-20 11.6 (.457) 20-25 10.6 (.417) 25-30 10.0 (.394) -- -4 Normally Closed 15-20 11.6 (.457) 20-25 10.6 (.417) 25-30 10.0 (.394) -- --
Note:
1. Pull-In AT Range: These AT values are the bare reed switch AT before modification.
2. The activation distance is average value on the final sensor assembly.
Activate Distance-D
Pull-In
mm (inch)
Average
Pull-In
AT Range
Activate Distance-D
mm (inch)
Average
Pull-In
AT Range
Activate Distance-D
mm (inch)
Average
Specifications are subject to change without notice.
Actuator
Sensor
littelfuse.com© 2019 Littelfuse Revised: 02/08/19
Reed Sensors
Flange Mounting Sensor > 59140
59140 Miniature Flange Mount Sensor + 57140 Actuator
Cable Length Specification
Cable Type: 24 AWG 7/32 PVC 105°C UL1430/UL1569
Select Option
02 300 (11.81)
Cable Length
mm (inch)
Termination Specification
Termination Options
Select
Option
A Tinned leads (6.4±0.76)mm
F Untinned leads (6.4±0.76)mm
E JST type XHP 2.5mm pitch
(Two-wire versions illustrated)
Description
Part Numbering System
Sensor:
Series
Switch Type
1, 2, 3, or 4
Sensitivity
S, T, U, or V
Cable Length
Termination
A, F, or E
Actuator:
59140 - X - X - XX - X
02
57140 - 000
Series
Standard Actuator
000
Note: The 57140 Actuator is sold separately.
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 500 N/A N/A
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
Specifications are subject to change without notice.
littelfuse.com© 2019 Littelfuse Revised: 02/08/19
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