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STM1816TWX7F

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by adom

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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STM1816TWX7F

STMicroelectronics · Supervisor and Reset ICs · SOT-23

STM1816TWX7F 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 output Active-low reset output, open-drain with internal 5.5 kΩ pull-up resistor to VCC. Pulses low when VCC drops below the reset threshold (VRST) and stays low as long as VCC is below threshold; remains low for the reset time-out period (trec, 100 ms min.) after VCC rises above threshold. Sinks up to ~12 mA; open-drain topology allows wired-OR interfacing to bidirectional MCU reset pins.
2 VCC power_in Supply voltage input and sense input for the reset-threshold comparator (VRST). Nominal 3.0 V / 3.3 V for the T-suffix STM1816 variant. A 0.1 µF bypass capacitor mounted as close as possible to this pin is recommended for transient immunity.
3 VSS power_in Ground reference for the power supply. Must be connected to the system ground.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • STM1816TWX7F

CAD (KiCad official)

  • Symbol: STM1816TWX7F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: stm1816twx7f-etched.step / stm1816twx7f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm1816twx7f.step / stm1816twx7f.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: lcsc)
  • 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