59141 Series Datasheet by Littelfuse Inc.

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littelfuse.com© 2019 Littelfuse Revised: 05/02/19
Specifications are subject to change without notice.
Reed Sensors
Flange Mounting Sensor > 59141
59141 Miniature Flange Mount Sensor + 57141 Actuator
Description
The 59141 is a miniature flange mounting reed sensor occupying only 3.22cm²
(0.500²) 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 left hand side. It is also
available with left hand exit - see 59140 Series. It is capable of switching up to
265Vac/300Vdc at 10VA. The 59141 functions best with the matching
actuator 57141-000.
Agency Approvals
Agency Agency File Number
E61760
Reed Sensors
Features
• Magnetically operated position
sensor
• Customer defined sensitivity
Choice of cable length and
connector
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
materials such as wood, plastic or
aluminium
• Excellent for switching micro-
controller logic level loads
Applications
• Position and limit sensing
• Security system switch
Linear actuators
Door switch
Dimensions
Dimensions in mm (inch)
Flange Mounting Sensor > 59141
Note: The 57141 Actuator is sold separately.
Schematics Switch Type
1 and 2
3
4
Black
Black
Black
Blue
White
Black
Black
3.20x3.81 Typ.
Slot (.126x.150)
(.118)
14.00
(.551)
3.00
7.50
(.295)
6.00
(.236)
(.433)
11.00
(.551)
14.00
(.906)
23.00
Actuator
300±10mm
(11.81±.394)
6.
35 Nom.
(.295)
(.551)
(.118)
(.236)
(Excluding Encapsulant)
(.433)
(.551)
23.00
(.250)
(.906)
14.00
11.00
6.00
3.00
7.50
14.00
Slot (.126x.150)
3.20x3.81 Typ.
Sensor (Two-wire version)
Note: Contact Littelfuse for specific agency approval ratings.
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littelfuse.com© 2019 Littelfuse Revised: 05/02/19
Specifications are subject to change without notice.
Reed Sensors
Flange Mounting Sensor > 59141
59141 Miniature Flange Mount Sensor + 57141 Actuator
Reed Sensors
Electrical Ratings
Contact Type Normally
Open Normally Open
High Voltage Change
Over Normally
Closed
Switch Type 1 2 3 4
Contact Rating 1VA/Watt - max. 10 10 5 5
Voltage 4Switching 2
Breakdown 3
Vdc - max.
Vac - max.
Vdc - min.
200
140
250
300
265
400
175
120
200
175
120
200
Current 4Switching 2
Carry
Adc - max.
Aac - max.
Adc - max.
0.5
0.35
1.2
.40
0.30
1.4
0.25
0.18
1.5
0.25
0.18
1.5
Resistance 5Contact, Initial
Insulation Ω - max.
Ω - min. 0.2
1010 0.2
1010 0.2
1090.2
109
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
Product Characteristics
Operate Time 6ms - max. 1.0 1.0 3.0 3.0
Release Time 6ms - max. 1.0 1.0 3.0 3.0
Shock 711ms 1⁄2 sine G - max. 100 100 50 50
Vibration 750-2000 Hz G - max. 30 30 30 30
Flange Mounting Sensor > 59141
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.
D
Actuator
Sensor
Sensitivity Options (Using 57141 Actuator)
Select Option S T U V
Switch Type Pull-In
AT
Range
Activate Distance -D
mm (inch)
Average
Pull-In
AT
Range
Activate Distance - D
mm (inch)
Average
Pull-In
AT
Range
Activate Distance - D
mm (inch)
Average
Pull-In
AT
Range
Activate Distance - D
mm (inch)
Average
1Normally Open 12-18 10.4 (.410) 17-23 8.4 (.330) 22-28 7.2 (.283) 27-33 6.3 (.248)
2High Voltage -- -- 17-23 8.4 (.330) 22-28 7.2 (.283) 27-33 6.3 (.248)
3Change Over 15-20 11.6 (.457) 20-25 10.6 (.417) 25-30 10.0 (.394) -- --
4Normally 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.
59141 X X XX X 57141 000
littelfuse.com© 2019 Littelfuse Revised: 05/02/19
Specifications are subject to change without notice.
Reed Sensors
Flange Mounting Sensor > 59141
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 500 N/A N/A
Part Numbering System
59141 - X - X - XX - X
Series
Switch Type
1, 2, 3, or 4
Sensitivity
S, T, U, or V
Termination
A, E, or F
Cable Length
02
Reed Sensors
Flange Mounting Sensor > 59141
59141 Miniature Flange Mount Sensor + 57141 Actuator
57141 - 000
Series
Standard Actuator
000
Actuator:
Sensor:
Cable Length Specification
Cable Type: 24 AWG 7/32 PVC 105°C UL1430/UL1569
Select Option Cable Length
mm (inch)
02 300 (11.81)
Termination Specification
Termination Options
Select
Option Description
(Two-wire versions illustrated)
ATinned leads (6.4±0.76)mm
FUntinned leads (6.4±0.76)mm
EJST type XHP 2.5mm pitch
Note: The 57141 Actuator is sold separately.
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 www.littelfuse.com/disclaimier-electronics.

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