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A1120LLHLT-T

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Allegro MicroSystems LLC Hall Sensor, SOT-23W. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs a1120llhlt-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
a1120llhlt-t-etched.fit.json a1120llhlt-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
a1120llhlt-t-etched.glb a1120llhlt-t: one-pass backfill (re-etched) · Ray
a1120llhlt-t-etched.step a1120llhlt-t: one-pass backfill (re-etched) · Ray
a1120llhlt-t-hero.glb Publish 0.2.1 · Ray
a1120llhlt-t-hero.overlay.json Publish 0.2.1 · Ray
a1120llhlt-t.glb Publish 0.1.0 · Ray
a1120llhlt-t.kicad_mod Publish 0.1.0 · Ray
a1120llhlt-t.kicad_sym Publish 0.1.0 · Ray
a1120llhlt-t.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
a1120llhlt-t.step Publish 0.1.0 · Ray
package.json Publish 0.2.2 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.2.2 · Ray
README.md a1120llhlt-t: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

A1120LLHLT-T

Allegro MicroSystems LLC · Hall Sensor · SOT-23W

A1120LLHLT-T from Allegro MicroSystems LLC, in a SOT-23W. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Supply voltage input. Operating range 3.0 V to 24 V. A bypass capacitor (typ. 0.1 µF) from VCC to GND is recommended for noise immunity.
2 GND power_in Ground return for the device.
3 VOUT output Open-drain digital Hall switch output. Sinks up to 25 mA when the magnetic field exceeds the operate point (BOP); high-impedance (requires external pull-up) when the field falls below the release point (BRP).

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems LLC
Package SOT-23W
Category Sensor
Pins 3

Ordering variants

  • A1120LLHLT-T
  • A1120LLHLT-TLUA-T

CAD (KiCad official)

  • Symbol: A1120LLHLT-T
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23W (KiCad packages3D, STEP)
  • 3D model files: a1120llhlt-t-etched.step / a1120llhlt-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a1120llhlt-t.step / a1120llhlt-t.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
a1120llhlt-t.step 59 KB You want the bare part, or you mark your own boards.
a1120llhlt-t-etched.step 1.3 MB You want the part with A1120LLHLT-T already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 349 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Allegro MicroSystems LLC datasheet (18 pp, sha256 2e2d51c564dee4c6, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF