component
A1103LLHLT-T
Public Made by Adomby adom
Allegro MicroSystems, LLC Magnetic Sensors, SOT-23W. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownA1103LLHLT-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);a1103llhlt-t.step/a1103llhlt-t.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).