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NCV8664CST50T3G

Public Made by Adom

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onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. 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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Datasheet

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Contents

README

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NCV8664CST50T3G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

NCV8664CST50T3G from onsemi, in a SOT-223. 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 VIN power_in Unregulated DC input supply, 4.5 V to 45 V operating range (absolute max +45 V, reverse-tolerant to -42 V). A 100 nF (min) input capacitor is recommended near the pin.
2 GND power_in Ground reference pin. Must be connected to system GND potential; ties internally to the TAB.
3 VOUT power_out Regulated 5.0 V output (±2.0 % accuracy over temperature), up to 150 mA. Requires an output capacitor (10 µF for the 5.0 V version) whose ESR falls within the stable region shown in Figure 4.
TAB GND power_in Substrate / thermal tab; internally connected to GND and provides the best thermal path to the die. Solder to a copper pour tied to GND for heat sinking.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-223
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • NCV8664CST50T3G
  • NCV8664CST50T3GST33T3G
  • NCV8664CST50T3GDT50RKG
  • NCV8664CST50T3GDT33RKG

CAD (KiCad official)

  • Symbol: NCV8664CST50T3G
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ncv8664cst50t3g.step 64 KB You want the bare part, or you mark your own boards.
ncv8664cst50t3g-etched.step 3.0 MB You want the part with NCV8664CST50T3G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 701 faces against 75 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 (16 pp, sha256 f0682165fd00839e, 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