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mcp1703t-3302e-etched.glb mcp1703t-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mcp1703t-3302e-etched.step mcp1703t-3302e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
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README.md mcp1703t-3302e-cb: renamed from mcp1703t-3302e, the part it was built from (MCP1703T-3302E/CB); family listed · Ray

MCP1703T-3302E/CB

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

MCP1703T-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 to the negative side of the output and input capacitors. Only the LDO bias current (2.0 µA typ) flows out of this pin; output regulation is referenced here. Minimize voltage drops between this pin and the negative side of the load.
2 VOUT power_out Regulated 3.3V output. Connect to the positive side of the load and the positive terminal of the output capacitor (1 µF to 22 µF ceramic recommended). Maximum continuous output current 250 mA; internal current limit ~500 mA typ.
3 VIN power_in Unregulated supply input. Operating range 2.7V to 16.0V (absolute max 18V). Requires low source impedance for stable LDO operation; a 1 µF ceramic input capacitor is recommended for most applications.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MCP1703T-3302ECB
  • MCP1703T-3302EMB
  • MCP1703T-3302EDB
  • MCP1703T-3302E

CAD (KiCad official)

  • Symbol: MCP1703T-3302E
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23A-3 (KiCad packages3D, STEP)
  • 3D model files: mcp1703t-3302e-etched.step / mcp1703t-3302e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp1703t-3302e.step / mcp1703t-3302e.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mcp1703t-3302e.step 59 KB You want the bare part, or you mark your own boards.
mcp1703t-3302e-etched.step 2.4 MB You want the part with MCP1703T-3302E already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 587 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 7bfdaa05d529bf00, 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

Other parts in this family

This page is MCP1703T-3302E/CB. These part numbers share its family name but are different parts (another package, rating or grade), each with its own page:

  • MCP1703T-3302E/DB
  • MCP1703T-3302E/DB-HXY
  • MCP1703T-3302E/MB
  • MCP1703T-3302E/MC