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JY1117E33AX

Public Made by Adom

by adom

Shenzhen JingYang Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. 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
Name Last commit message Last updated
docs jy1117e33ax: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
viewers fix footprint: SOT-223 -> SOT-223-3_TabPin2 (symbol has pins 1,2,3; the old footprint left pad(s) 4 with no net) · Ray
jy1117e33ax-etched.fit.json jy1117e33ax: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
jy1117e33ax-etched.glb jy1117e33ax: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
jy1117e33ax-etched.step jy1117e33ax: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
jy1117e33ax-hero.glb Publish 0.2.1 · Ray
jy1117e33ax-hero.overlay.json Publish 0.2.1 · Ray
jy1117e33ax.glb Publish 0.1.0 · Ray
jy1117e33ax.kicad_mod fix footprint: SOT-223 -> SOT-223-3_TabPin2 (symbol has pins 1,2,3; the old footprint left pad(s) 4 with no net) · Ray
jy1117e33ax.kicad_sym Publish 0.1.0 · Ray
jy1117e33ax.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
jy1117e33ax.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json jy1117e33ax: model_3d_plain back to the plain GLB (pkg publish re-declared the etched one) · Ray
README.md jy1117e33ax: specified limits as data (metadata.characteristics, 18 rows from the datasheet) · Ray

JY1117E33AX

Shenzhen JingYang · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4

JY1117E33AX from Shenzhen JingYang, in a SOT-223-4. 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 for the fixed-output 3.3 V version. On the adjustable variant this same pin is the Adj feedback input; because JY1117E33AX is a fixed-mode part, it is tied to system ground. Per datasheet 'Ground only for Fixed-Mode'.
2 VOUT power_out Regulated 3.3 V output (typ 3.300 V, min 3.235 V, max 3.365 V at IOUT=10 mA). Rated for 1 A continuous. Requires a minimum 0.2 µF X7R/X5R MLCC (or 3.3 µF EL, 10 mΩ ≤ ESR ≤ 1 Ω) from this pin to ground for stability. The SOT-223 tab is internally connected to VOUT and serves as the heat-sink pad.
3 VIN power_in Regulator input supply, 2.7 V to 12 V operating (abs max -0.3 V to 15 V). Must be at least VOUT + 1.4 V (dropout) to regulate; datasheet recommends at least 1.5 V headroom above VOUT. A local input storage capacitor to ground is required to prevent the input from sagging below the dropout during load transients.

Key specifications

Parameter Value
Manufacturer Shenzhen JingYang
Package SOT-223-4
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • JY1117E33AX
  • JY1117E33AXEXX
  • JY1117E33AXEXXA
  • JY1117E33AXD33
  • JY1117E33AXD33A
  • JY1117E33AXDXX
  • JY1117E33AXDXXA
  • JY1117E33AXF33
  • JY1117E33AXF33A
  • JY1117E33AXFXX
  • JY1117E33AXFXXA

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operation Input Voltage 2.7 12 V 5
Reference Voltage 1.225 1.25 1.275 V IOUT = 10mA, TJ=25°C, (VIN-OUT)=1.5V 5
Output Voltage (-3.3) 3.235 3.3 3.365 V IOUT = 10mA, TJ = 25°C, 4.8V≤VIN≤12V 5
Line Regulation 0.2 0.5 % IOUT=10mA, VOUT+1.5V< VIN<12V, TJ=25°C (Note 1,2) 5
Load Regulation (-3.3) 26 33 mV VIN=5V, 10mA≤IOUT≤1A, TJ=25°C (Note 1,2) 6
Dropout Voltage VIN-VOUT 1.2 1.4 V IOUT = 1A, ΔVOUT=1%VOUT 6
Current Limit 1 A (VIN-VOUT) = 1.5V 6
Minimum Load Current 5 7 mA 0°C≤TJ≤125°C 6
Ripple Rejection 50 60 70 dB F=120Hz, COUT=10μF, 0.2μF, (VIN-VOUT) = 1.5V 6
DC Supply Voltage VIN -0.3 15 V 4
Operating Junction Temperature Range Top -40 125 °C 4
Maximum Junction Temperature TMJ 150 °C 4
Storage Temperature TST -65 150 °C 4
Power Dissipation SOT-223 (with heat sink) PD 1300 mW Heat sink area 5mm*5mm; TA=25°C, TJ=125°C 4
Power Dissipation SOT-223 (no heat sink) PD 850 mW No heat sink; no air flow; TA=25°C, TJ=125°C 4
Thermal Resistance Junction-to-Ambient SOT-223 (with heat sink) TJA 75 °C/W Note 4: tab connected to 5mm*5mm multi-layer PCB copper area 6
Thermal Resistance Junction-to-Ambient SOT-223 (no heat sink) TJA 117 °C/W No heat sink; no air flow 6
Thermal Resistance Junction-to-Case SOT-223 TJC 15 °C/W 6

CAD (KiCad official)

  • Symbol: JY1117E33AX
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)
  • 3D model files: jy1117e33ax-etched.step / jy1117e33ax-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jy1117e33ax.step / jy1117e33ax.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
jy1117e33ax.step 64 KB You want the bare part, or you mark your own boards.
jy1117e33ax-etched.step 1.6 MB You want the part with JY1117E33AX already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 413 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: Shenzhen JingYang datasheet (14 pp, sha256 fe77cb471f1f490b, 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