A1221EUA-T
| 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 | 2005 |
| Series | Automotive, AEC-Q100 |
| JESD-609 Code | e3 |
| Pbfree Code | yes |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 3 |
| Termination | Through Hole |
| Terminal Finish | Matte Tin (Sn) |
| Additional Feature | REVERSE BATTERY PROTECTION, SHORT-CIRCUIT PROTECTION |
| Subcategory | Other Sensors/Transducers |
| Technology | Hall Effect |
| Voltage - Supply | 3V~24V |
| Function | Latch |
| Output Type | Open Drain |
| Max Output Current | 25mA |
| Operating Supply Current | 4mA |
| Polarization | South Pole |
| Nominal Supply Current | 4mA |
| Output Current | 25mA |
| Max Supply Current | 4mA |
| Bandwidth | 800 kHz |
| Test Condition | -40°C ~ 85°C |
| Sensing Range | 9mT Trip, -9mT Release |
| Hysteresis | 10 mT |
| Output Circuit Type | SINGLE-ENDED |
| Magnetic Field Range-Min | -9 mT |
| Magnetic Field Range-Max | 9 mT |
| Height | 3.02mm |
| Length | 4.09mm |
| Width | 1.52mm |
| REACH SVHC | No SVHC |
| RoHS Status | ROHS3 Compliant |
A1221EUA-T Overview
A magnetic switch is packaged in the Bulk to prevent damage. It is necessary to put the magnetic switches into 3-SSIP packages in order to ensure their safety. In their operating mode, these switches can output a maximum current of 25mA. There is a limit to 4mA current that can be supplied by these switches. Switches are operated by 3 pins. The document has 3 terminations. Switches should generally output 25mA current. A nominally working device can supply a constant current of 4mA.
A1221EUA-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
A1221EUA-T Applications
There are a lot of Allegro MicroSystems A1221EUA-T Magnetic Switches applications.
- Flow metering
- Industrial process control
- Magnetic encoders
- Spindles
- Open/close sensor for LCD screens/doors/lids/trunks
- Speed and RPM (revolutions per minute) sensing
- Fan speed measurement
- Identification of magnetic patterns in cards and banknotes
- Lighting actuation slave sensor
- Tachometers/counters