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STM1811MWX7F

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by Ray

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

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3D Model

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Datasheet

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Contents

README

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STM1811MWX7F

STMicroelectronics · Supervisor and Reset ICs · SOT-23-3

STM1811MWX7F from STMicroelectronics, in a SOT-23-3. 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 output Active-low reset output (open-drain) with internal 5.5 kΩ pull-up resistor to VCC. Pulses low when VCC drops below the VRST threshold and remains low for at least trec (100 ms min.) after VCC rises above threshold. Guaranteed valid down to VCC = 1.0 V.
2 VCC power_in Supply voltage and input for the VRST reset-threshold comparator. Nominal 5 V rail (STM1811 is the 5 V variant of the family). Typical supply current ≈ 4 µA. 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 supply. Must be connected to system ground.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • STM1811MWX7F
  • STM1811MWX7FLWX7F
  • STM1811MWX7FLW

CAD (KiCad official)

  • Symbol: STM1811MWX7F
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

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