# APX810S-31SA-7

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

APX810S-31SA-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, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground. |
| 2 | RESET | output | Active-high push-pull reset output (APX810S) that is asserted when VCC falls below the reset threshold and held for at least 240ms (typ. 240ms) after VCC rises above it, valid down to VCC = 1V. |
| 3 | VCC | power_in | Operating voltage input, 1.0V to 5.5V recommended, absolute maximum 6.0V. |

## 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 (-31) | VTH | 3.04 | 3.08 | 3.12 | V | TA = +25°C | 4 |
| Reset Active Timeout Period | tDELAY | 140 | 240 | 280 | ms | VCC ≥ 1.02 x VTH | 4 |
| RESET Output Voltage Low (APX810S) | VOL |  |  | 0.3 | V | VCC = VTH + 0.2V, ISINK = 1.2mA | 4 |
| RESET Output Voltage Low (APX810S) | VOL |  |  | 0.4 | V | VCC = VTH + 0.2V, ISINK = 3.2mA | 4 |
| Supply Voltage | VCC | -0.3 |  | 6 | V | TA = +25°C | 3 |
| RESET Voltage | VRESET | -0.3 |  | 6 | V | TA = +25°C | 3 |
| Input Current | ICC |  |  | 20 | mA | TA = +25°C | 3 |
| Output Current | IO |  |  | 20 | mA | TA = +25°C | 3 |
| ESD HBM | ESD |  |  | 6000 | V | HBM (Human Body Model) | 3 |
| ESD MM | ESD |  |  | 600 | V | MM (Machine Model) | 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 Output Voltage | VRESET | 0 |  | 5.5 | V |  | 3 |
| Reset Threshold Voltage Temperature Coefficient | ΔVTH/ΔT |  | 30 |  | ppm/°C | TA = -40 to +125°C | 4 |
| VCC Drop to Delay | tS |  | 20 |  | µs | VCC = VTH to (VTH - 100mV) | 4 |
| Thermal Resistance Junction-to-Ambient | θJA |  | 232 |  | °C/W | SOT23 | 3 |
| Thermal Resistance Junction-to-Case | θJC |  | 87 |  | °C/W | SOT23 | 3 |

## CAD (KiCad official)

- Symbol: `APX810S-31SA-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `apx810s-31sa-7-etched.step` / `apx810s-31sa-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `apx810s-31sa-7.step` / `apx810s-31sa-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/APX810S-31SA-7.pdf) (10 pp, sha256 `b644892b2c8d0948`, retrieved 2026-10-23, tier: manufacturer)
- **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](docs/apx810s-31sa-7-datasheet.pdf)