| Parameters | 
                                                                                                            
                                            | Factory Lead Time | 12 Weeks | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | TO-236-3, SC-59, SOT-23-3 | 
                                                                            
                                            | Supplier Device Package | SOT-23-3 | 
                                                                            
                                            | Operating Temperature | -30°C~85°C TA | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Published | 2012 | 
                                                                            
                                            | Series | EM | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Max Operating Temperature | 85°C | 
                                                                            
                                            | Min Operating Temperature | -30°C | 
                                                                            
                                            | Technology | Hall Effect | 
                                                                            
                                            | Voltage - Supply | 1.6V~5.5V | 
                                                                            
                                            | Function | Omnipolar Switch | 
                                                                            
                                            | Current - Supply (Max) | 9μA | 
                                                                            
                                            | Output Type | Push-Pull | 
                                                                            
                                            | Max Output Current | 500μA | 
                                                                            
                                            | Polarization | North Pole, South Pole | 
                                                                            
                                            | Current - Output (Max) | 500μA | 
                                                                            
                                            | Max Supply Current | 9μA | 
                                                                            
                                            | Sensing Method | Hall Effect | 
                                                                            
                                            | Test Condition | -30°C ~ 85°C | 
                                                                            
                                            | Sensing Range | ±4.4mT Trip, ±0.9mT Release | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                EM6781 Overview
Magnetic switches are packaged in Tape & Reel (TR) to prevent damage. In order to ensure safety, magnetic switches are packaged in TO-236-3, SC-59, SOT-23-3 packages. As a maximum current, magnetic switches can supply 9μA. If they are working properly, these switches can output a maximum current of 500μA. A magnetic switch should only output 500μA current. It is possible for these switches to supply a maximum current of 9μA. Magnet switches can be set to operate at 85°C. The operating temperature of this magnetic switch must not be lower than -30°C. 
EM6781 Features
Packaging: Tape & Reel (TR)
Moisture Sensitivity Level (MSL): 1  (Unlimited)
Supply Voltage: 1.6V~5.5V
Operating Temperature: -30°C~85°C TA
Mounting Type: Surface Mount
Output Type: Push-Pull
Maximum Supply Current: 9μA
EM6781 Applications
There are a lot of AKM Semiconductor Inc. EM6781 Magnetic Switches applications. 
- Generator set
- Shafts in transmissions, hydraulic motors, pumps and gear boxes
- Monitor protections of the safety gates
- Speed and RPM (revolutions per minute) sensing
- Dyno testing
- Tachometers/counters
- Commutation of brushless DC motors
- Speed and direction of gears
- Angle sensing
- End of travel and index sensors