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STM812TW16F
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STMicroelectronics Supervisor And Reset ICs, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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STM812TW16F
STMicroelectronics · Supervisor And Reset ICs · SOT-143-4
STM812TW16F from STMicroelectronics, in a SOT-143-4. 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 | VSS | power_in | Ground reference for the supervisor. |
| 2 | RST | output | Push-pull active-high reset output on the STM812 that asserts when VCC falls below the reset threshold or MR is low, and stays asserted for trec (140 ms min, 210 ms typ, 280 ms max) after release; it is guaranteed valid down to VCC = 1.0 V and can both source and sink current. |
| 3 | MR | input | Active-low manual reset input with an internal 20 kΩ pull-up (10 to 30 kΩ) that can be left open if unused; a low of at least 10 µs asserts reset, and a normally open push-button to GND needs no external debounce. |
| 4 | VCC | power_in | Supply voltage monitored against the reset threshold, operating range 1.2 to 5.5 V over -40 to +85 °C (1.0 to 5.5 V at 0 to +70 °C), with an absolute maximum of 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-143-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
STM812TW16F - Footprint:
Package_TO_SOT_SMD:SOT-143 - 3D model: SOT-143-4 (KiCad packages3D, STEP)
- 3D model files:
stm812tw16f-etched.step/stm812tw16f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm812tw16f.step/stm812tw16f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (21 pp, sha256
24f3f88facdeb210, retrieved 2026-10-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).
# STM812TW16F
**STMicroelectronics** · Supervisor And Reset ICs · SOT-143-4
STM812TW16F from STMicroelectronics, in a SOT-143-4. 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 | VSS | power_in | Ground reference for the supervisor. |
| 2 | RST | output | Push-pull active-high reset output on the STM812 that asserts when VCC falls below the reset threshold or MR is low, and stays asserted for trec (140 ms min, 210 ms typ, 280 ms max) after release; it is guaranteed valid down to VCC = 1.0 V and can both source and sink current. |
| 3 | MR | input | Active-low manual reset input with an internal 20 kΩ pull-up (10 to 30 kΩ) that can be left open if unused; a low of at least 10 µs asserts reset, and a normally open push-button to GND needs no external debounce. |
| 4 | VCC | power_in | Supply voltage monitored against the reset threshold, operating range 1.2 to 5.5 V over -40 to +85 °C (1.0 to 5.5 V at 0 to +70 °C), with an absolute maximum of 7.0 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-143-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |
## CAD (KiCad official)
- Symbol: `STM812TW16F`
- Footprint: `Package_TO_SOT_SMD:SOT-143`
- 3D model: SOT-143-4 (KiCad packages3D, STEP)
- 3D model files: `stm812tw16f-etched.step` / `stm812tw16f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm812tw16f.step` / `stm812tw16f.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940402313334784) (21 pp, sha256 `24f3f88facdeb210`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/stm812tw16f-datasheet.pdf)