Specifications are subject to change without notice.
littelfuse.com
Reed Sensors
Flange Mounting Sensor > 59140
59140 Miniature Flange Mount Sensor + 57140 Actuator
Electrical Ratings
Contact Type
Switch Type
Contact Rating
Voltage
4
1
Normally
Open
1
VA/Watt - max.
Switching
2
Normally Open
High Voltage
2
10
300
265
400
.40
0.30
1.4
0.2
10
10
0.2
-20 to +105
Change
Over
3
5
175
120
200
0.25
0.18
1.5
0.2
10
9
0.3
-40 to +105
Normally
Closed
4
5
175
120
200
0.25
0.18
1.5
0.2
10
9
0.3
-40 to +105
10
200
140
250
0.5
0.35
1.2
0.2
10
10
0.3
-40 to +105
Breakdown
4
3
Vdc - max.
Vac - max.
Vdc - min.
Adc - max.
Aac - max.
Adc - max.
Ω - max.
Ω - min.
pF - typ.
°C
Current
Switching
Carry
5
2
Resistance
Contact, Initial
Insulation
Contact
Operating
Capacitance
Temperature
Product Characteristics
Operate Time
Release Time
Shock
7
7
6
6
ms - max.
ms - max.
11ms 1⁄2 sine
50-2000 Hz
G - max.
G - max.
1.0
1.0
100
30
1.0
1.0
100
30
3.0
3.0
50
30
3.0
3.0
50
30
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.
Sensitivity Options (Using 57140 Actuator)
Select Option
Switch Type
S
T
Pull-In AT
Range
U
Activate Distance
mm (inch)
Average
Pull-In AT
Range
V
Activate Distance
mm (inch)
Average
Distance Pull-In AT Activate Distance
Pull-In AT Activate (inch)
mm
mm (inch)
Range
Range
Average
Average
1
2
3
4
Normally Open
High Voltage
Change Over
Normally Closed
12-18
--
15-20
15-20
10.4 (.410)
--
11.6 (.457)
11.6 (.457)
17-23
17-23
20-25
20-25
8.4 (.330)
8.4 (.330)
10.6 (.417)
10.6 (.417)
22-28
22-28
25-30
25-30
D
7.2 (.283)
7.2 (.283)
10.0 (.394)
10.0 (.394)
27-33
27-33
--
--
6.3 (.248)
6.3 (.248)
--
--
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.
When the upper driver calls the IoCallDriver function in its Plug and Play routine to hand over the PnP IRP to the lower driver for processing, will the statements after the IoCallDriver function call...
[i=s] This post was last edited by Tongxiaokaocode on 2021-7-8 14:17[/i]A guide to avoid pitfalls when the logic analyzer sampling rate fails to reach 24MHz and prompts to reduce the speed (see 27th f...
I saw a short article in the taxi. It said that it was the New Year, and many restaurants were closed. People working outside had gone home. No matter how many things there were, they would be discuss...
For example, my microcontroller needs to expand a simple 8253.When I look at other people's programs, Isee the circuit diagram and they say that the addresses of the three timer counters of this 8253 ...
Flip-chip and ball grid array (BGA) are two widely used packaging technologies in the electronics industry. Each has its own advantages and limitations, and in some cases, they can complement each ...[Details]
To enable real-time monitoring of home security and automatically dial a number for voice prompts or send text messages when an alarm occurs, a GPRS-based embedded telephone alarm system was design...[Details]
On August 25th, TSMC, the world's leading contract chip manufacturer, attracted significant attention for its decision to build a chip manufacturing facility in Arizona. TSMC primarily manufactures...[Details]
Definition of interactive projection system:
Interactive projection systems, also known as multimedia interactive projection, are available in floor, wall, and tabletop interactive projection....[Details]
According to foreign media reports, researchers at the University of Surrey have developed an artificial intelligence system that can accurately locate the location of equipment in densely populate...[Details]
According to foreign media reports, BMW has just been granted a patent for a screen that could cover the entire roof. BMW hopes to transform at least a portion of the vehicle's headliner into a dis...[Details]
Recently, AstroBo Robot, a subsidiary of Chenxing Automation, launched a new mobile collaborative palletizing product. Leveraging an omnidirectional mobile chassis, an intelligent scheduling system...[Details]
With the increasing number of new energy vehicles on the road, the deployment of supporting facilities for these vehicles has accelerated, and new energy vehicles have gradually entered the vision ...[Details]
Recently, Joyson Electronics has made positive progress in the core technology research and development of the robot's "brain and brain" and key components, and launched the industry's first integr...[Details]
HTTP is the abbreviation of Hypertext Transfer Protocol. It is an application protocol based on TCP/IP communication protocol used to transmit HTML and image files. It is an application-level objec...[Details]
Shanghai, China, August 21, 2025 –
Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today announced the launch of the TLX9161T
, an automotive photorelay in a compact SO12L-T pa...[Details]
introduction
Inverter air conditioners are a trend in the current era and have gradually become commonplace in countless households. Beyond their basic cooling and heating functions, air condi...[Details]
The evolution of high-speed networks remains guided by the same core objectives: increasing data rates, reducing latency, improving reliability, lowering power consumption, and maintaining or exten...[Details]
On August 20, Reuters reported that two sources revealed that U.S. Commerce Secretary Howard Lutnick is exploring the possibility of using CHIPS Act funds in exchange for equity stakes in chip manu...[Details]
The power transmission system between a car's engine and drive wheels is called its drivetrain. It ensures the necessary traction and speed under various driving conditions, and coordinates these t...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
