component

STWD100NYWY3F

Public Made by Adom

by adom

STWD100NYWY3F with source-traceable pin map and explicitly nominal drawing-led CAD.

componentpmicstwd100nywy3f
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Correct oversized SOT23 nominal geometry and preserve source evidence · John Lauer
review Correct oversized SOT23 nominal geometry and preserve source evidence · John Lauer
viewers Publish 0.2.1 · John Lauer
build_nominal_model.py Publish 0.2.1 · John Lauer
LICENSE-KICAD.md Publish 0.2.1 · John Lauer
package.json Publish 0.2.1 · John Lauer
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Correct oversized SOT23 nominal geometry and preserve source evidence · John Lauer
provenance-correction.json Publish 0.2.1 · John Lauer
README.md Publish 0.2.1 · John Lauer
stwd100nywy3f-ai-nominal.step Publish 0.2.1 · John Lauer
stwd100nywy3f-etched.check.json Publish 0.2.1 · John Lauer
stwd100nywy3f-etched.check.png Publish 0.2.1 · John Lauer
stwd100nywy3f-etched.fit.json stwd100nywy3f: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
stwd100nywy3f-etched.glb Publish 0.2.1 · John Lauer
stwd100nywy3f-etched.mark-plan.json Publish 0.2.1 · John Lauer
stwd100nywy3f-etched.step Publish 0.2.1 · John Lauer
stwd100nywy3f-hero.glb Publish 0.2.1 · John Lauer
stwd100nywy3f-hero.overlay.json Publish 0.2.1 · John Lauer
stwd100nywy3f.glb Publish 0.2.1 · John Lauer
stwd100nywy3f.kicad_mod Publish 0.1.0 · Ray
stwd100nywy3f.kicad_sym Publish 0.1.0 · Ray
stwd100nywy3f.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
stwd100nywy3f.step Publish 0.2.1 · John Lauer

STWD100NYWY3F

STMicroelectronics · 5-pin SOT-23.

Pinout

Pin Name Type Function
1 WDO output Active-low watchdog output. Asserted low when the internal watchdog timer expires without being cleared. Available as open-drain (requires external pull-up, e.g. 10 kΩ to a supply up to 6 V) or push-pull depending on device suffix.
2 GND power_in Device ground reference.
3 EN input Active-low chip enable input. When low the watchdog is enabled; when high the watchdog is disabled. Has an internal pull-down to GND, so the device is enabled if EN is left floating. Pulses ≥1 µs are detected; glitches shorter than 100 ns are ignored.
4 WDI input Watchdog input. Must be toggled within the watchdog timeout period tWD to clear the internal timer, otherwise WDO is asserted. Low-to-high transitions reset the timer on all versions; high-to-low transitions also reset it on STWD100xW/xX/xY. Pulses ≥1 µs are detected; glitches shorter than 100 ns are ignored.
5 VCC power_in Supply voltage input. Watchdog timer starts running once VCC rises above the startup voltage VSTART (~2.2 V). Typical operating current 13 µA.

Model correction and provenance

Original Adom nominal model from the manufacturer package dimensions: 2.9 ×1.6 mm body,2.8 mm lead span,0.95 mm pitch and1.20 mm height. The previous generic1.55 mm model exceeded ST's1.45 mm maximum. This is drawing-led CAD, not a manufacturer STEP or a tolerance envelope. Mold taper, lead bends and materials are illustrative.

The marked variant adds a0.005 mm virtual full-MPN identification layer. It does not reproduce factory markings or physical etching. Board-use models omit the hero's nonphysical footprint/signal annotations.

The existing KiCad-derived symbol and footprint retain the library license exception. The footprint remains a generic variant; manufacturer land recommendations and process qualification require separate review.

See provenance, reference PDF, and manufacturer source. Reference review: DocID014134 Rev8, Table6, page19.

Local model review, native file validation, published wiki visual review and physical qualification are distinct.