# AH1889-Z-7

**Diodes Incorporated** · Magnetic Sensors · SOT-553-5

AH1889-Z-7 from Diodes Incorporated, in a SOT-553-5. 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 | OUTPUT2 | output | North pole detecting output pin (active low), which is pulled low when a North pole of sufficient strength turns it on. |
| 2 | GND | power_in | Ground reference pin. |
| 3 | NC | unconnected | No connection; not connected internally, and may be left open or tied to ground. |
| 4 | VDD | power_in | Power supply voltage pin, operating from 1.65 V to 3.6 V. |
| 5 | OUTPUT1 | output | South pole detecting output pin (active low), which is pulled low when a South pole of sufficient strength turns it on. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-553-5 |
| Category | Sensors |
| Pins | 5 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| OUTPUT1 and OUTPUT2 Low Voltage (on) | VOL |  | 0.1 | 0.2 | V | IOUT = 0.5mA | 3 |
| Operation Point (South pole to part marking side), OUTPUT1 | Bops |  | 35 | 50 | Gauss | South pole to part marking side | 3 |
| Release point (South pole to part marking side), OUTPUT1 | Brps | 6 | 20 |  | Gauss | South pole to part marking side | 3 |
| Operation Point (North pole to part marking side), OUTPUT2 | Bopn | -50 | -35 |  | Gauss | North pole to part marking side | 3 |
| Release point (North pole to part marking side), OUTPUT2 | Brpn |  | -20 | -6 | Gauss | North pole to part marking side | 3 |
| Operating Temperature Range | TA | -40 |  | 85 | °C | Operating | 3 |
| Supply Voltage | VDD | 1.65 |  | 3.6 | V | Operating | 3 |
| Supply Voltage | VDD |  |  | 5 | V | Note 7: 6V absolute maximum is a transient stress rating only | 2 |
| Reverse Supply Voltage | VDD_REV | -0.3 |  |  | V |  | 2 |
| Output current (source and sink) | IOUTPUT |  |  | 1 | mA | source and sink | 2 |
| Package Power Dissipation SOT553 | PD |  |  | 230 | mW | SOT553 | 2 |
| Storage Temperature Range | Ts | -65 |  | 150 | C |  | 2 |
| Maximum Junction Temperature | TJ |  |  | 150 | C |  | 2 |
| Human Body Model ESD capability | ESD |  |  | 4 | kV | Human Body Model | 2 |
| Supply Current, outputs off | IDD |  | 2.1 |  | mA | VDD = 1.8V Outputs Off | 3 |
| Supply Current, outputs off | IDD |  | 5 |  | mA | VDD = 3.6V Outputs Off | 3 |
| Hysteresis (/Bopx/-/Brpx/) | Bhy |  | 8 |  | Gauss |  | 3 |

## 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 |
|---|---|---|---|---|
| housing | Abs |  | ESD Human Body Model ESD capability 4 kV Notes: 6. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only; | 2 |

## CAD (KiCad official)

- Symbol: `AH1889-Z-7`
- Footprint: `Package_TO_SOT_SMD:SOT-553`
- 3D model: SOT-553-5 (KiCad packages3D, STEP)
- 3D model files: `ah1889-z-7-etched.step` / `ah1889-z-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ah1889-z-7.step` / `ah1889-z-7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AH1889-Z-7.pdf) (7 pp, sha256 `49640912f7301999`, retrieved 2026-11-11, tier: manufacturer)
- **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/ah1889-z-7-datasheet.pdf)