# APX809S00-40SR-7

**Diodes Incorporated** · Monitors & Reset Circuits · SOT-23

APX809S00-40SR-7 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | /RESET | output | Active-low push-pull reset output (APX809S); it asserts when VCC falls below the preset reset threshold and stays asserted for the reset active timeout period after VCC rises above the threshold (1.7 ms typical for the -00 timeout option in this part number). |
| 2 | GND | power_in | Ground reference pin. |
| 3 | VCC | power_in | Operating voltage input; the recommended supply range is 1.0 V to 5.5 V, and the absolute maximum rating is -0.3 V to 6.0 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Power Supply Chip |
| 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 Current | ICC |  | 7 | 16 | μA | VTH + 0.2V | 4 |
| Reset Threshold Voltage (APX809SXX-40, TA = +25°C) | VTH | 3.94 | 4 | 4.05 | V | TA = +25°C | 4 |
| Reset Threshold Voltage Temperature Coefficient |  |  | 30 |  | ppm/°C | TA = -40 to +125°C | 4 |
| Reset Active Timeout Period (APX809S00-XX, 1.7ms option) | tDELAY | 1 | 1.7 | 3.3 | ms | VCC ≥ 1.02 x VTH | 4 |
| VCC Drop to Delay | tS |  | 20 |  | µs | VCC = VTH to (VTH - 100mV) | 4 |
| RESET Output Voltage Low (APX809S) | VOL |  |  | 0.3 | V | VCC = VTH - 0.2V, ISINK = 1.2mA | 4 |
| RESET Output Voltage Low (APX809S) | VOL |  |  | 0.4 | V | VCC = VTH - 0.2V, ISINK = 3.2mA | 4 |
| Supply Voltage (absolute maximum rating) | VCC | -0.3 |  | 6 | V |  | 3 |
| RESET/RESET Voltage (absolute maximum rating) | VRESET | -0.3 |  | 6 | V |  | 3 |
| Input Current | ICC |  |  | 20 | mA |  | 3 |
| Output Current | IO |  |  | 20 | mA |  | 3 |
| Thermal Resistance Junction-to-Ambient SOT23 | θJA |  | 232 |  | °C/W |  | 3 |
| Thermal Resistance Junction-to-Case SOT23 | θJC |  | 87 |  | °C/W |  | 3 |
| ESD Human Body Model | ESD HBM |  |  | 6000 | V |  | 3 |
| ESD Machine Model | ESD MM |  |  | 600 | V |  | 3 |
| Junction Temperature Range | TJ | -40 |  | 150 | °C |  | 3 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 3 |
| Operating Ambient Temperature Range | TA | -40 |  | 125 | °C |  | 3 |
| Supply Voltage | VCC | 1 |  | 5.5 | V |  | 3 |
| RESET/RESET Output Voltage | VRESET | 0 |  | 5.5 | V |  | 3 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `APX809S00-40SR-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.025 mm tall, datasheet A, nominal). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `apx809s00-40sr-7-etched.step` / `apx809s00-40sr-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `apx809s00-40sr-7.step` / `apx809s00-40sr-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/APX809S00-40SR-7.pdf) (10 pp, sha256 `b644892b2c8d0948`, retrieved 2026-11-13, 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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/apx809s00-40sr-7-datasheet.pdf)