# AH3040

**Nanjing AH Elec S & T** · Hall Sensor · TO-92

AH3040 from Nanjing AH Elec S & T, in a TO-92. 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 | Supply pin for the Hall switch; the datasheet gives an operating supply range of 4.5 V to 24 V and an absolute maximum supply voltage of 24 V. |
| 2 | GND | power_in | Ground pin for the Hall switch circuit. |
| 3 | Vo | output | Open-collector output that delivers the digital switching signal; the datasheet limits the output low-level current IOL to 25 mA maximum and the output reverse breakdown voltage Vce to 40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nanjing AH Elec S & T |
| Package | TO-92 |
| 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 | 4.5 |  | 24 | V |  | 1 |
| Output reverse breakdown voltage | Vce |  |  | 40 | V |  | 1 |
| Output low-level current | IOL |  |  | 25 | mA |  | 1 |
| Operating ambient temperature | TA | -20 |  | 85 | ℃ |  | 1 |
| Storage temperature (high temperature) | TS |  |  | 150 | ℃ |  | 1 |
| Supply voltage (absolute maximum) | VCC |  |  | 24 | V |  | 1 |
| Output low-level voltage | VOL |  | 200 | 400 | mV | Iout=15mA B>BOP | 1 |
| Output high-level leakage current | IOH |  | 0.1 | 10 | μA | Vout=24V B<BRP | 1 |
| Supply current | ICC |  |  | 10 | mA | VCC=24V 输出开路 | 1 |
| Operating point | BOP |  | 15 | 20 | mT | VCC=4.5～24V | 1 |
| Release point | BRP | 3 | 10 |  | mT | VCC=4.5～24V | 1 |
| Hysteresis | BH | 2 |  |  | mT | VCC=4.5～24V | 1 |
| Output rise time | tr |  | 0.12 |  | μS | RL=820Ω CL=20PF | 1 |
| Output fall time | tf |  | 0.18 |  | μS | RL=820Ω CL=20PF | 1 |

## CAD (KiCad official)

- Symbol: `AH3040`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `ah3040-etched.step` / `ah3040-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ah3040.step` / `ah3040.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nanjing AH Elec S & T datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590169199483396096) (2 pp, sha256 `7372699e2940d5f6`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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](docs/ah3040-datasheet.pdf)