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L78L10ACUTR

Public Unreviewed

by Ray

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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L78L10ACUTR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

L78L10ACUTR from STMicroelectronics, in a SOT-89-3. 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 VOUT power_out Regulated +10 V output. Nominal 10 V (min 9.2 V, max 10.8 V at TJ=25 °C); delivers up to 100 mA. A 0.1 µF ceramic capacitor to GND is recommended for stability and transient response.
2 GND power_in Common ground reference for input and output. On the SOT-89 package the GND pin is also electrically connected to the die-attach tab on the top of the package for heat dissipation.
3 VIN power_in Unregulated DC input. For the 10 V option VI must exceed VOUT by at least the dropout (~1.7 V typ) and stay within the 30 V absolute-max input rating (VO 3.3-9 V range spec). A 0.33 µF ceramic input capacitor to GND is recommended, particularly when the regulator is located far from the power-supply filter.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-89-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • L78L10ACUTR
  • L78L10ACUTRZ
  • L78L10ACUTRD

CAD (KiCad official)

  • Symbol: L78L10ACUTR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78l10acutr.step 57 KB You want the bare part, or you mark your own boards.
l78l10acutr-etched.step 1.4 MB You want the part with L78L10ACUTR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 375 faces against 42 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: STMicroelectronics datasheet (40 pp, sha256 8b73c521b7f1b36e, 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).

Datasheet PDF