STM811SW16F

@@ -0,0 +1,50 @@+# STM811SW16F++**STMicroelectronics** · Supervisor and Reset ICs · SOT-143++STM811SW16F 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 supervisor. Tie to the system ground plane. |+| 2 | RST | output | Active-low reset output (push-pull). Asserted (driven low) whenever VCC is below the reset threshold or MR is held low; remains asserted for at least trec (~140 ms) after the fault clears. Guaranteed valid down to VCC = 1 V; both sources and sinks current. |+| 3 | MR | input | Manual reset input, active low. A logic low asserts RST and keeps it asserted for trec after MR returns high. Internally pulled up to VCC via a 20 kΩ resistor, so it may be left open if unused; a normally-open push-button to GND provides a manual reset. Optional 0.1 µF cap from MR to GND for noise immunity. |+| 4 | VCC | power_in | Monitored supply voltage input (typ. 3.0/3.3/5 V depending on threshold variant). A 0.1 µF bypass capacitor to VSS mounted close to this pin is recommended for transient immunity. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-143 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `STM811SW16F`+- `STM811SW16FSTM812SW16F`+- `STM811SW16FSTM811LW16F`+- `STM811SW16FSTM811MW16F`+- `STM811SW16FSTM811RW16F`+- `STM811SW16FSTM811TW16F`+- `STM811SW16FSTM809xW16F`+- `STM811SW16FSTM810xW16F`++## CAD (KiCad official)++- Symbol: `STM811SW16F`+- Footprint: `Package_TO_SOT_SMD:SOT-143`+- 3D model: SOT-143 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/stm811sw16f.pdf) (21 pp, sha256 `24f3f88facdeb210`, 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/stm811sw16f-datasheet.pdf)

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