component

A1103LLHLT-T

Public Made by Adom

by adom

Allegro MicroSystems, LLC Magnetic Sensors, SOT-23W. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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A1103LLHLT-T

Allegro MicroSystems, LLC · Magnetic Sensors · SOT-23W

A1103LLHLT-T from Allegro MicroSystems, LLC, in a SOT-23W. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Connects power supply to chip; operating supply range 3.8 to 24 V (absolute maximum 30 V, reverse -30 V).
2 VOUT output Open-drain NMOS output from circuit that switches low when B exceeds BOP, sinking up to 25 mA with off voltage up to 30 V.
3 GND power_in Ground connection for the device.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VCC 3.8 24 V Operating, TJ < 165°C 3
Output Leakage Current IOUTOFF 10 µA VOUT = 24 V, B < BRP 3
Output On Voltage VOUT(SAT) 215 400 mV IOUT = 20 mA, B > BOP 3
Power-On Time tPO 4 µs Slew rate (dVCC/dt) < 2.5 V/µs, B > BOP + 5 G or B < BRP, 5 G 3
Output Rise Time tr 400 ns VCC = 12 V, RLOAD = 820 Ω, CS = 12 pF 3
Output Fall Time tf 400 ns VCC = 12 V, RLOAD = 820 Ω, CS = 12 pF 3
Supply Current On ICCON 4.1 7.5 mA B > BOP 3
Supply Current Off ICCOFF 3.8 7.5 mA B < BRP 3
Reverse Battery Current IRCC -10 mA VRCC = -30 V 3
Supply Zener Clamp Voltage VZ 32 V ICC = 10.5 mA; TA = 25°C 3
Supply Zener Current IZ 10.5 mA VZ = 32 V; TA = 25°C 3
Operate Point A1103 BOP 220 280 340 G TA = 25°C 4
Operate Point A1103 BOP 205 280 355 G Operating Temperature Range 4
Release Point A1103 BRP 165 225 285 G TA = 25°C 4
Release Point A1103 BRP 150 225 300 G Operating Temperature Range 4
Hysteresis A1103 BHYS 30 55 80 G TA = 25°C 4
Supply Voltage (absolute maximum) VCC 30 V 2
Reverse Supply Voltage VRCC -30 V 2
Output Off Voltage VOUT 30 V 2
Reverse Output Voltage VROUT -0.5 V 2
Output Current IOUTSINK 25 mA 2
Operating Ambient Temperature, Range L TA -40 150 °C Range L 2
Maximum Junction Temperature TJ(max) 165 °C 2
Storage Temperature Tstg -65 170 °C 2
Package Thermal Resistance, LH 1-layer RθJA 228 °C/W Package LH, 1-layer PCB with copper limited to solder pads 5
Package Thermal Resistance, LH 2-layer RθJA 110 °C/W Package LH, 2-layer PCB with 0.463 in.2 of copper area each side connected by thermal vias 5

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin ultramini SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte-tin-plated leadframes. 1

CAD (KiCad official)

  • Symbol: A1103LLHLT-T
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23W (KiCad packages3D, STEP)
  • 3D model files: a1103llhlt-t-etched.step / a1103llhlt-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a1103llhlt-t.step / a1103llhlt-t.glb are the bare package body.

Provenance

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

  • Datasheet: Allegro MicroSystems, LLC datasheet (13 pp, sha256 5598f0aa6003c39d, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF