| Parameters | 
                                                                                                            
                                            | Factory Lead Time | 12 Weeks | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 4-XFDFN Exposed Pad | 
                                                                            
                                            | Supplier Device Package | 4-DFN (1.1x1.4) | 
                                                                            
                                            | Operating Temperature | -30°C~85°C TA | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Published | 2013 | 
                                                                            
                                            | 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 | Latch | 
                                                                            
                                            | Current - Supply (Max) | 10mA | 
                                                                            
                                            | Output Type | Push-Pull | 
                                                                            
                                            | Max Output Current | 500μA | 
                                                                            
                                            | Polarity | South Pole | 
                                                                            
                                            | Polarization | South Pole | 
                                                                            
                                            | Current - Output (Max) | 500μA | 
                                                                            
                                            | Max Supply Current | 10mA | 
                                                                            
                                            | Logic Function | Latch | 
                                                                            
                                            | Sensing Method | Hall Effect | 
                                                                            
                                            | Test Condition | -30°C ~ 85°C | 
                                                                            
                                            | Sensing Range | 4.2mT Trip, -4.2mT Release | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                AK8771 Overview
This Tape & Reel (TR) package protects the magnetic switch from damage. In order to prevent damage to the magnetic switches, they are packaged in 4-XFDFN Exposed Pad packages. In order to perform well, magnetic switches can provide a maximum current of 10mA. If these switches work, they can output 500μA as the maximum current. It is recommended that magnetic switches should have a maximum output current of 500μA. This switch is capable of supplying a maximum current of 10mA. Magnetic switches can be set to 85°C for the maximum operating temperature. In order for this magnetic switch to function, the working temperature must be greater than -30°C. 
AK8771 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: 10mA
AK8771 Applications
There are a lot of AKM Semiconductor Inc. AK8771 Magnetic Switches applications. 
- Fan speed measurement
- Conducting objects
- Industrial controls
- Speed and RPM (revolutions per minute) sensing
- Position and limit sensing
- Lighting actuation slave sensor
- White goods
- Magnetic encoders
- Dyno testing
- Factory automation