Parameters |
Factory Lead Time |
8 Weeks |
Mount |
Through Hole |
Mounting Type |
Through Hole |
Package / Case |
3-SSIP |
Number of Pins |
3 |
Operating Temperature |
-40°C~85°C TA |
Packaging |
Bulk |
Published |
2010 |
Series |
Automotive, AEC-Q100 |
JESD-609 Code |
e3 |
Feature |
High Temperature |
Pbfree Code |
yes |
Part Status |
Active |
Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
Number of Terminations |
3 |
Type |
Unipolar Switch |
Terminal Finish |
Matte Tin (Sn) |
Technology |
Hall Effect |
Voltage - Supply |
3V~24V |
Function |
Unipolar Switch |
Current - Supply (Max) |
4mA |
Body Length or Diameter |
4.09mm |
Body Breadth |
1.52 mm |
Output Type |
Open Drain |
Max Output Current |
25mA |
Operating Supply Current |
4mA |
Polarization |
South Pole |
Output Current |
25mA |
Test Condition |
-40°C ~ 85°C |
Housing |
PLASTIC |
Sensing Range |
13.5mT Trip, 4mT Release |
Hysteresis |
2.5 mT |
Magnetic Field Range-Min |
5 mT |
Body Height |
4.12mm |
Radiation Hardening |
No |
RoHS Status |
ROHS3 Compliant |
A1121EUA-T Overview
A protective Bulk package is used to protect the magnetic switch against damage. For safety reasons, the magnetic switches are packaged in 3-SSIP packages. A good performance can be achieved with magnetic switches that can deliver 4mA as the maximum current. It is possible for these switches to output 25mA as the maximum current when they are working. Switches work with 3 pins. This has 3 terminations. In general, the switches should output 25mA of current.
A1121EUA-T Features
Packaging: Bulk
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Supply Voltage: 3V~24V
Operating Temperature: -40°C~85°C TA
Mounting Type: Through Hole
3 Pins
3 Terminations
Output Type: Open Drain
Maximum Supply Current: 4mA
A1121EUA-T Applications
There are a lot of Allegro MicroSystems A1121EUA-T Magnetic Switches applications.
- Wiper home/end position sensor
- Fan speed measurement
- Encoders
- Industrial controls
- Speedometers
- Localization of ferromagnetic
- Reed switch replacement
- Brushless DC (direct current) motor commutation
- Speed and RPM (revolutions per minute) sensing
- Spindles