AZ1117IH-3.3TRG1
Public Unreviewedby Ray
Diodes Incorporated AZ1117IH 3 3TRG1 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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README
markdownAZ1117IH-3.3TRG1
Diodes Incorporated AZ1117IH 3 3TRG1 · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
AZ1117IH-3.3TRG1 from Diodes Incorporated AZ1117IH 3 3TRG1, 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 reference for the regulator. On fixed-voltage AZ1117I versions (including the -3.3 variant) the ADJ pin is internally tied to the fixed feedback divider, so pin 1 functions as the device ground return. |
| 2 | VOUT | power_out | Regulated 3.3V output (1.176-1.224V… - for -3.3 variant: nominal 3.3V, ±1% accuracy over line/load). Requires a minimum 10µF output capacitor with ESR < 20Ω (low-ESR ceramic compatible). Pin 2 is internally connected to the SOT-223 tab. |
| 3 | VIN | power_in | Unregulated input supply. Recommended VIN ≤ 15V (absolute max 18V). Requires VIN ≥ VOUT + VDROP (typ. 1.2V @ 0.8A for SOT223) for regulation. A 10µF bypass capacitor is recommended near this pin. |
| 4 | VOUT | power_out | SOT-223 heat-spreader tab, internally connected to pin 2 (VOUT). Soldered to a copper pour on the PCB for heat dissipation (θJA drops from 125 to 100 °C/W with heatsink copper). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated AZ1117IH 3 3TRG1 |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 4 |
Ordering variants
AZ1117IH-3.3TRG1AZ1117IH-3.3TRG1AZ1117ID-3.3TRG1
CAD (KiCad official)
- Symbol:
AZ1117IH-3.3TRG1 - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
az1117ih-3-3trg1.step |
64 KB | You want the bare part, or you mark your own boards. |
az1117ih-3-3trg1-etched.step |
2.1 MB | You want the part with AZ1117IH-3.3TRG1 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 547 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: Diodes Incorporated AZ1117IH 3 3TRG1 datasheet (17 pp, sha256
48934059d42aa84f, retrieved 2026-08-17, tier: manufacturer) - 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).