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MCP1703AT-3302E

Public Made by Adom

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Microchip Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23A-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs mcp1703at-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
mcp1703at-3302e-etched.fit.json mcp1703at-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mcp1703at-3302e-etched.glb mcp1703at-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mcp1703at-3302e-etched.step mcp1703at-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mcp1703at-3302e.glb Publish 0.1.0 · Ray
mcp1703at-3302e.kicad_mod Publish 0.1.0 · Ray
mcp1703at-3302e.kicad_sym Publish 0.1.0 · Ray
mcp1703at-3302e.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
mcp1703at-3302e.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
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 Publish 0.2.1 · Ray
README.md mcp1703at-3302e: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MCP1703AT-3302E

Microchip · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23A-3

MCP1703AT-3302E from Microchip, in a SOT-23A-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 GND power_in Regulator ground. Tie GND to the negative side of the output and negative side of the input capacitor. Only the LDO bias current (~2.0 µA typical) flows through this pin; output regulation is referenced here, so minimize voltage drops between this pin and the load return.
2 VOUT power_out Regulated 3.3 V output. Connect to the positive side of the load and the positive terminal of the output capacitor (1 µF to 22 µF ceramic recommended). Delivers up to 250 mA continuous with 625 mV typical dropout at 250 mA (VR = 2.8 V).
3 VIN power_in Unregulated supply input, 2.7 V to 16.0 V operating range (18 V absolute maximum). Low source impedance is required for stability; a 1 µF ceramic input capacitor located close to the pin ensures stable LDO operation. Ceramic, tantalum, or aluminum electrolytic types are acceptable.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MCP1703AT-3302ECB
  • MCP1703AT-3302EDB
  • MCP1703AT-3302EMB
  • MCP1703AT-3302E

CAD (KiCad official)

  • Symbol: MCP1703AT-3302E
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23A-3 (KiCad packages3D, STEP)
  • 3D model files: mcp1703at-3302e-etched.step / mcp1703at-3302e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp1703at-3302e.step / mcp1703at-3302e.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mcp1703at-3302e.step 59 KB You want the bare part, or you mark your own boards.
mcp1703at-3302e-etched.step 2.5 MB You want the part with MCP1703AT-3302E already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 611 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 (31 pp, sha256 ee4e9c3b0b2c09bb, 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