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AMS1117A-3.3V

Public Made by Adom

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HX hengjiaxing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs ams1117a-3-3v: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 17d ago
viewers ams1117a-3-3v: viewers · Ray 1mo ago
ams1117a-3-3v-etched.fit.json ams1117a-3-3v: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ams1117a-3-3v-etched.glb ams1117a-3-3v: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 17d ago
ams1117a-3-3v-etched.step ams1117a-3-3v: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 17d ago
ams1117a-3-3v.glb Publish 0.1.0 · Ray 1mo ago
ams1117a-3-3v.kicad_mod Publish 0.1.0 · Ray 1mo ago
ams1117a-3-3v.kicad_sym Publish 0.1.0 · Ray 1mo ago
ams1117a-3-3v.lbr Publish 0.1.0 · Ray 1mo ago
ams1117a-3-3v.step Publish 0.1.0 · Ray 1mo ago
package.json ams1117a-3-3v: manufacturer 'HX hengjiaxing' (was 'HX hengjiaxing AMS1117A 3 3V': the MPN had been folded in) · Ray 1mo ago
page.json ams1117a-3-3v: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 17d ago
README.md ams1117a-3-3v: manufacturer 'HX hengjiaxing' (was 'HX hengjiaxing AMS1117A 3 3V': the MPN had been folded in) · Ray 1mo ago

AMS1117A-3.3V

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

AMS1117A-3.3V from HX hengjiaxing, 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
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)
  • 3D model files: ams1117a-3-3v-etched.step / ams1117a-3-3v-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ams1117a-3-3v.step / ams1117a-3-3v.glb are the bare package body.

Provenance

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

  • Datasheet: HX hengjiaxing 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