| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            8 Weeks | 
                                        
                                                                            
                                            | Mount | 
                                            Through Hole | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Through Hole | 
                                        
                                                                            
                                            | Package / Case | 
                                            4-SSIP | 
                                        
                                                                            
                                            | Number of Pins | 
                                            4 | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TA | 
                                        
                                                                            
                                            | Packaging | 
                                            Bulk | 
                                        
                                                                            
                                            | Published | 
                                            2013 | 
                                        
                                                                            
                                            | Series | 
                                            Automotive, AEC-Q100 | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            4 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Matte Tin (Sn) | 
                                        
                                                                            
                                            | Technology | 
                                            Hall Effect | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            3.5V~24V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            SINGLE | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            12V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            1.27mm | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Function | 
                                            Special Purpose | 
                                        
                                                                            
                                            | Output Type | 
                                            Open Drain | 
                                        
                                                                            
                                            | Max Output Current | 
                                            70mA | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            3.5V | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            ANALOG CIRCUIT | 
                                        
                                                                            
                                            | Operating Supply Current | 
                                            8mA | 
                                        
                                                                            
                                            | Polarization | 
                                            South Pole | 
                                        
                                                                            
                                            | Current - Output (Max) | 
                                            30mA | 
                                        
                                                                            
                                            | Output Current | 
                                            30mA | 
                                        
                                                                            
                                            | Test Condition | 
                                            -40°C ~ 150°C | 
                                        
                                                                            
                                            | Sensing Range | 
                                            5.5mT Trip, -5.5mT Release | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            5.67mm | 
                                        
                                                                            
                                            | Length | 
                                            5.21mm | 
                                        
                                                                            
                                            | Width | 
                                            1.55mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                                                    
                            
                         
                                                A1233LK-T Overview
This Bulk package protects the magnetic switch from damage. Magnet switches are packed in 4-SSIP packages for safety reasons. The maximum current that can be produced by these switches is 70mA. To output current, magnetic switches should be set to 30mA. Switches require 4 pins to work. The file has 4 terminations. Switches should generally output a current of 30mA. It is expected that this switch will supply 12V voltage to ensure reliable operation. Magnetic switches are capable of providing voltages as low as 3.5V. 
A1233LK-T Features
Packaging: Bulk
Moisture Sensitivity Level (MSL): 1  (Unlimited)
Supply Voltage: 3.5V~24V
Operating Temperature: -40°C~150°C TA
Mounting Type: Through Hole
4 Pins
4 Terminations
Output Type: Open Drain
A1233LK-T Applications
There are a lot of Allegro MicroSystems A1233LK-T Magnetic Switches applications. 
- Open/close sensor for LCD screens/doors/lids/trunks
 - Electric window lift
 - Anti-lock braking systems
 - Fan speed measurement
 - End of travel and index sensors
 - Dyno testing
 - Speedometers
 - Encoders
 - Reed switch replacement
 - Convertible roof position