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MCP111T-300E

Public Unreviewed

by Ray

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

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

MCP111T-300E

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

MCP111T-300E from Microchip, 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 VOUT output Active-low, open-drain reset output. Asserts low when VDD < VTRIP (3.00 V nominal) and releases high (via external pull-up) when VDD > VTRIP + VHYS. Requires external pull-up (typ. 100 kOhm); IOL up to 500 uA at VOL <= 0.4 V; absolute-max VODH 13.5 V (open-drain).
2 VSS power_in Ground reference (0 V).
3 VDD power_in Positive supply, 1.0 V to 5.5 V operating (7.0 V absolute max). Monitored input; internal comparator + band-gap reference sense this rail against VTRIP = 3.00 V nominal. Recommend a 0.1 uF bypass cap close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MCP111T-300E/TT
  • MCP111T-300E/LB
  • MCP111T-300E/MB
  • MCP111-300E/TO

CAD (KiCad official)

  • Symbol: MCP111T-300E
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mcp111t-300e.step 59 KB You want the bare part, or you mark your own boards.
mcp111t-300e-etched.step 1.8 MB You want the part with MCP111T-300E already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 460 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Microchip datasheet (32 pp, sha256 8cfcaedafe808931, 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