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STM1818RWX7F

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by adom

STMicroelectronics Supervisor and Reset ICs, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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STM1818RWX7F

STMicroelectronics · Supervisor and Reset ICs · SOT-23

STM1818RWX7F from STMicroelectronics, in a SOT-23. 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 RST bidirectional Active-low reset output, open-drain with internal 5.5 kΩ pull-up to VCC. Pulses low when VCC drops below VRST or when RST is externally pulled low for at least 1.5 µs (push-button/manual reset detect). Remains low for tPBRST (≥100 ms) after VCC rises above the reset threshold or after the manual reset is released. Pin is bidirectional so it can be driven directly by a debounce push-button switch to GND.
2 VCC power_in Supply voltage and input to the VRST reset-threshold comparator. Nominal supply is +3.0 V / +3.3 V for STM1815-STM1818. A 0.1 µF bypass capacitor should be placed as close as possible to this pin for transient immunity.
3 VSS power_in Ground reference for the power supply; must be connected to system ground.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • STM1818RWX7FW7F
  • STM1818RWX7F

CAD (KiCad official)

  • Symbol: STM1818RWX7F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: stm1818rwx7f-etched.step / stm1818rwx7f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm1818rwx7f.step / stm1818rwx7f.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (25 pp, sha256 92bdec36422e0716, 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