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STWD100YNWWY3F
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STMicroelectronics Supervisor And Reset ICs, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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STWD100YNWWY3F
STMicroelectronics · Supervisor And Reset ICs · SOT-23-5
STWD100YNWWY3F from STMicroelectronics, in a SOT-23-5. 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 | WDO | output | Active-low watchdog output, configurable as open drain or push-pull, asserted for tPW after the watchdog timeout tWD expires; an open-drain output needs an external pull-up to a supply up to 6 V. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | EN | input | Chip enable input with an internal pull-down resistor (32 kΩ to 100 kΩ), where VIH is 0.7 VCC minimum and VIL is 0.3 VCC maximum; pulses of at least 1 µs are detected and glitches shorter than 100 ns are ignored. |
| 4 | WDI | input | Watchdog input that must be toggled within the watchdog timeout period tWD to clear the internal timer, with VIH of 0.7 VCC minimum and VIL of 0.3 VCC maximum; pulses of at least 1 µs are detected and glitches shorter than 100 ns are ignored. |
| 5 | VCC | power_in | Supply voltage with an operating range of 2.7 V to 5.5 V and an absolute maximum of 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
STWD100YNWWY3F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
stwd100ynwwy3f-etched.step/stwd100ynwwy3f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stwd100ynwwy3f.step/stwd100ynwwy3f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (20 pp, sha256
2ec54876f17739de, retrieved 2026-10-12, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).
# STWD100YNWWY3F
**STMicroelectronics** · Supervisor And Reset ICs · SOT-23-5
STWD100YNWWY3F from STMicroelectronics, in a SOT-23-5. 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 | WDO | output | Active-low watchdog output, configurable as open drain or push-pull, asserted for tPW after the watchdog timeout tWD expires; an open-drain output needs an external pull-up to a supply up to 6 V. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | EN | input | Chip enable input with an internal pull-down resistor (32 kΩ to 100 kΩ), where VIH is 0.7 VCC minimum and VIL is 0.3 VCC maximum; pulses of at least 1 µs are detected and glitches shorter than 100 ns are ignored. |
| 4 | WDI | input | Watchdog input that must be toggled within the watchdog timeout period tWD to clear the internal timer, with VIH of 0.7 VCC minimum and VIL of 0.3 VCC maximum; pulses of at least 1 µs are detected and glitches shorter than 100 ns are ignored. |
| 5 | VCC | power_in | Supply voltage with an operating range of 2.7 V to 5.5 V and an absolute maximum of 7.0 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## CAD (KiCad official)
- Symbol: `STWD100YNWWY3F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `stwd100ynwwy3f-etched.step` / `stwd100ynwwy3f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stwd100ynwwy3f.step` / `stwd100ynwwy3f.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/8588939471991812096) (20 pp, sha256 `2ec54876f17739de`, retrieved 2026-10-12, tier: lcsc)
- **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:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/stwd100ynwwy3f-datasheet.pdf)