# STM6315RDW13F

**STMicroelectronics** · Supervisor and Reset ICs · SOT-143

STM6315RDW13F from STMicroelectronics, in a SOT-143. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VSS | power_in | Ground reference for the device. Connect to the system ground plane; a 0.1 µF bypass capacitor on VCC referenced to VSS is recommended for transient immunity. |
| 2 | RST | output | Active-low, open-drain reset output. Requires an external pull-up (10 kΩ typical) to any supply up to 6 V, and may be pulled above VCC. Asserts low whenever VCC is below the reset threshold or MR is low, and remains low for the reset time-out period (trec) after the condition clears. Guaranteed valid down to VCC = 1.0 V. |
| 3 | MR | input | Active-low manual reset input. Asserts RST while held low and for trec after release. Has an internal ~63 kΩ pull-up so it may be left open if unused. Accepts TTL/CMOS logic or open-drain drive; a simple pushbutton to VSS provides a debounced manual reset without external components. |
| 4 | VCC | power_in | Positive supply input, monitored against the factory-trimmed reset threshold (2.63/2.93/3.08/4.38/4.63 V depending on ordering suffix). Typical ICC ≈ 1.5 µA. Decouple with a 0.1 µF capacitor as close to the pin as possible. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-143 |
| Category | PMIC |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `STM6315RDW13F`
- `STM6315RDW16F`
- `STM6315RDW17F`
- `STM6315RDW13FRDW20F`
- `STM6315RDW13FRDW21F`

## CAD (KiCad official)

- Symbol: `STM6315RDW13F`
- Footprint: `Package_TO_SOT_SMD:SOT-143`
- 3D model: SOT-143 (KiCad packages3D, STEP)
- 3D model files: `stm6315rdw13f-etched.step` / `stm6315rdw13f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm6315rdw13f.step` / `stm6315rdw13f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/stm6315rdw13f.pdf) (21 pp, sha256 `059408cf2a388c0c`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/stm6315rdw13f-datasheet.pdf)