component
NCP1117ST15T3G
Public Unreviewedby Ray
onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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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README
markdownNCP1117ST15T3G
onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
NCP1117ST15T3G 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 | GND | power_in | Ground return pin for the fixed-output version (labeled 'Adjust/Ground'; on fixed devices such as the -15 variant this pin is the device ground reference). |
| 2 | VOUT | power_out | Regulated 1.5 V output. Delivers up to 1.0 A output current. Requires a 10 µF output capacitor for stability. The SOT-223 heatsink tab is internally connected to this pin. |
| 3 | VIN | power_in | Unregulated input supply. Rated up to 20 V maximum (Vin). Requires a 10 µF input bypass capacitor. Dropout is typically ≤1.2 V at 800 mA. |
| 4 | TAB | power_out | SOT-223 heatsink tab. Internally connected to Pin 2 (VOUT). Solder to a copper pour on the PCB tied to VOUT to improve thermal dissipation (RθJA = 160 °C/W minimum-pad SOT-223). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 4 |
Ordering variants
Same part, different packaging or reel option.
NCP1117ST15T3GNCP1117ST15T3GDT
CAD (KiCad official)
- Symbol:
NCP1117ST15T3G - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (19 pp, sha256
ec598b15cd7d6ea1, retrieved 2026-08-17, tier: lcsc) - 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).