component

NCP1117DT33T5G

Public Made by Adom

by adom

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). 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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NCP1117DT33T5G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)

NCP1117DT33T5G from onsemi, in a TO-252-2(DPAK). 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 Ground / Adjust pin. On fixed-voltage devices such as the -33 (3.3 V) variant, this pin is the ground return for the regulator (internal reference is trimmed to the fixed output). Connect to system ground.
2 VOUT power_out Regulated 3.3 V output, capable of delivering in excess of 1.0 A. Output accuracy trimmed to ±1.0%. Requires a 10 μF output capacitor for stability. The DPAK heatsink tab is internally connected to this pin.
3 VIN power_in Unregulated input voltage, up to 20 V absolute maximum. For 3.3 V output, Vin must be at least ~4.75 V to guarantee regulation over full load (dropout ≤1.2 V @ 800 mA). Bypass with 10 μF input capacitor.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-252-2(DPAK)
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • NCP1117DT33T5G
  • NCP1117DT33T5GST33T3G

CAD (KiCad official)

  • Symbol: NCP1117DT33T5G
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
  • 3D model files: ncp1117dt33t5g-etched.step / ncp1117dt33t5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp1117dt33t5g.step / ncp1117dt33t5g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ncp1117dt33t5g.step 119 KB You want the bare part, or you mark your own boards.
ncp1117dt33t5g-etched.step 2.1 MB You want the part with NCP1117DT33T5G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 544 faces against 83 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: onsemi datasheet (17 pp, sha256 1852f8c8cf0eb18c, 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