component

AMS1117A-3.3V

Public Unreviewed

by Ray

HX hengjiaxing AMS1117A 3 3V Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicams1117a-3.3v
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

AMS1117A-3.3V

HX hengjiaxing AMS1117A 3 3V · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

AMS1117A-3.3V from HX hengjiaxing AMS1117A 3 3V, in a SOT-223-3. 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 Ground / common return for the regulator. On the fixed-output AMS1117A-3.3V this pin is the device ground reference (labeled 'Vss/ADJ' on the package; the ADJ function applies only to the -ADJ variant).
2 VOUT power_out Regulated 3.3V output (3.234-3.366V, ±2%) capable of sourcing up to 1A continuous (1.4A max). Requires a 10µF output capacitor for stability.
3 VIN power_in Unregulated input supply. Recommended operating input up to 15V (absolute max 18V); requires ≥4.8V to maintain 3.3V regulation at load (dropout 1.3V typ at 1A). Bypass with a 10µF tantalum capacitor to GND.

Key specifications

Parameter Value
Manufacturer HX hengjiaxing AMS1117A 3 3V
Package SOT-223-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • AMS1117A-3.3VL
  • AMS1117A-3.3V33L
  • AMS1117A-3.3VO
  • AMS1117A-3.3V33O

CAD (KiCad official)

  • Symbol: AMS1117A-3.3V
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HX hengjiaxing AMS1117A 3 3V datasheet (9 pp, sha256 cd3d5a1ea037be22, 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