Parameters |
Mounting Type |
Surface Mount |
Package / Case |
TO-243AA |
Surface Mount |
YES |
Operating Temperature |
-40°C~150°C TA |
Packaging |
Bulk |
Published |
2011 |
JESD-609 Code |
e0 |
Feature |
Programmable Trip Point |
Part Status |
Obsolete |
Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
Number of Terminations |
3 |
Terminal Finish |
TIN LEAD |
HTS Code |
8542.39.00.01 |
Technology |
Hall Effect |
Voltage - Supply |
4.2V~24V |
Terminal Position |
SINGLE |
Terminal Form |
FLAT |
Peak Reflow Temperature (Cel) |
240 |
Supply Voltage |
12V |
Terminal Pitch |
1.5mm |
Time@Peak Reflow Temperature-Max (s) |
30 |
JESD-30 Code |
R-PSSO-F3 |
Function |
Unipolar Switch |
Current - Supply (Max) |
7mA |
Qualification Status |
Not Qualified |
Output Type |
Open Collector |
Supply Voltage-Max (Vsup) |
24V |
Supply Voltage-Min (Vsup) |
4.2V |
Analog IC - Other Type |
ANALOG CIRCUIT |
Polarization |
South Pole |
Current - Output (Max) |
20mA |
Sensing Range |
Programmable |
Height Seated (Max) |
1.6mm |
Length |
4.5mm |
Width |
2.445mm |
RoHS Status |
Non-RoHS Compliant |
A3251LLT Overview
The magnetic switch is packaged in the Bulk to ensure it is protected against damage. A safety precaution is taken by putting the magnetic switches into TO-243AA packages. In order to function well, magnetic switches should be able to supply a maximum current of 7mA. If magnetic switches are to be output, the maximum current should be 20mA. This document contains 3 terminations. When this switch is functioning, its maximum voltage should be 24V. In normal conditions, this switch will deliver 12V voltage. Magnetic switches are capable of providing voltages as low as 4.2V.
A3251LLT Features
Packaging: Bulk
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Supply Voltage: 4.2V~24V
Operating Temperature: -40°C~150°C TA
Mounting Type: Surface Mount
3 Terminations
Output Type: Open Collector
Maximum Supply Current: 7mA
A3251LLT Applications
There are a lot of Allegro MicroSystems A3251LLT Magnetic Switches applications.
- Counter pickup
- Antitheft systems
- Navigation
- Robotics control
- Localization of ferromagnetic
- Position tracking
- Speed and RPM (revolutions per minute) sensing
- Lighting actuation slave sensor
- White goods
- Compressor speed