Parameters |
Factory Lead Time |
1 Week |
Mount |
Surface Mount |
Mounting Type |
Surface Mount |
Package / Case |
SOT-23W |
Number of Pins |
3 |
Operating Temperature |
-40°C~150°C TA |
Packaging |
Tape & Reel (TR) |
Published |
2009 |
Series |
Automotive, AEC-Q100 |
Pbfree Code |
yes |
Part Status |
Active |
Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
Additional Feature |
AEC-Q100; ISO 26262 COMPLIANT; SHORT-CIRCUIT PROTECTION |
Technology |
Hall Effect |
Voltage - Supply |
3V~24V |
Function |
Latch |
Body Length or Diameter |
2.98mm |
Body Breadth |
1.91 mm |
Output Type |
Open Drain |
Max Output Current |
25mA |
Termination Type |
SOLDER |
Operating Supply Current |
4mA |
Polarization |
South Pole |
Output Current |
25mA |
Max Supply Current |
4mA |
Bandwidth |
800 kHz |
Test Condition |
-40°C ~ 150°C |
Sensing Range |
9mT Trip, -9mT Release |
Hysteresis |
10 mT |
Magnetic Field Range-Min |
-9 mT |
Magnetic Field Range-Max |
9 mT |
Body Height |
1mm |
RoHS Status |
ROHS3 Compliant |
A1221LLHLT-T Overview
The magnetic switch is packaged in the Tape & Reel (TR) to prevent damage. A safety precaution is taken by putting the magnetic switches into SOT-23W packages. The maximum current these switches can supply when they work is 25mA. The maximum current supplied by these switches can be 4mA. Switches have 3 pins for operation. Current output by switches should be 25mA in general.
A1221LLHLT-T Features
Packaging: Tape & Reel (TR)
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Supply Voltage: 3V~24V
Operating Temperature: -40°C~150°C TA
Mounting Type: Surface Mount
3 Pins
Output Type: Open Drain
A1221LLHLT-T Applications
There are a lot of Allegro MicroSystems A1221LLHLT-T Magnetic Switches applications.
- Compressor speed
- Robotics control
- Speed and RPM (revolutions per minute) sensing
- Fan speed measurement
- Industrial controls
- Industrial process control
- Tachometers/counters
- Magnetic encoders
- Flow-rate sensing
- Gear reducer RPM