| Parameters | 
                                                                                                            
                                            | Mount | Screw | 
                                                                            
                                            | Package / Case | Rectangular, Wire Leads | 
                                                                            
                                            | Number of Pins | 3 | 
                                                                            
                                            | Actuator Material | Magnet, South Pole | 
                                                                            
                                            | Operating Temperature | -40°C~100°C TA | 
                                                                            
                                            | Published | 2015 | 
                                                                            
                                            | Series | 55140 | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Termination | Wire Leads | 
                                                                            
                                            | Type | Hall Effect Switch | 
                                                                            
                                            | Subcategory | Other Sensors/Transducers | 
                                                                            
                                            | Technology | CMOS | 
                                                                            
                                            | Voltage - Supply | 3.8V~24V | 
                                                                            
                                            | Frequency | 10kHz | 
                                                                            
                                            | Termination Style | Wire Leads | 
                                                                            
                                            | Body Breadth | 14 mm | 
                                                                            
                                            | Output Type | Digital | 
                                                                            
                                            | Output Current | 20mA | 
                                                                            
                                            | Output Range | 20mA | 
                                                                            
                                            | Body Height | 6mm | 
                                                                            
                                            | Radiation Hardening | No | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                55140-3M-05-A Overview
Packages containing magnetic position sensors are labeled Rectangular, Wire Leads. A sensor module has a pin count of 3. It is essential for the sensor modules to carry a current of 20mA in order to work properly. 
55140-3M-05-A Features
Package / Case: Rectangular, Wire Leads
55140 Series
Operating Temperature: -40°C~100°C TA
Supply Voltage: 3.8V~24V
Frequency: 10kHz
3 Pins
55140-3M-05-A Applications
There are a lot of Littelfuse Inc. 55140-3M-05-A Magnetic Position Sensors Modules applications. 
- Compressor speed
- Flow metering
- Pumps
- Speed and RPM (revolutions per minute) sensing
- Brushless DC (direct current) motor commutation
- Discrimination of ferromagnetic
- Position tracking
- Detection of ferromagnetic
- Anti-lock braking systems
- Synchronization