AZ1117CH-3.3TRG1
Public Unreviewedby Ray
Diodes 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
markdownAZ1117CH-3.3TRG1
Diodes · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
AZ1117CH-3.3TRG1 from Diodes, 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. Also acts as the ADJ pin on the adjustable version (AZ1117C-ADJ); for the -3.3V fixed variant this pin is tied internally to set the 3.3V output and is connected to system ground. |
| 2 | OUTPUT | power_out | Regulated 3.3V output (±1%). Requires a minimum 10µF low-ESR ceramic output capacitor (ESR < 20Ω) for stability. Supports up to 1.35A typical current limit with on-chip thermal shutdown at TJ ≈ +160°C. |
| 3 | INPUT | power_in | Unregulated input supply. Absolute maximum 18V; recommended operating maximum 15V. Dropout voltage is 1.2V typical (SOT223) at IOUT = 0.8A. A 10µF input capacitor is recommended. |
| 4 | VOUT (TAB) | power_out | Metal tab electrically connected to OUTPUT (pin 2). Provides the primary thermal path to the PCB copper pour; solder to the OUTPUT net and to a copper heatsink area to reduce θJA (SOT223 θJA = 125°C/W without heatsink, 100°C/W with heatsink). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 4 |
Ordering variants
AZ1117CH-3.3TRG1HAZ1117CH-3.3TRG1H2AZ1117CH-3.3TRG1RAZ1117CH-3.3TRG1R2AZ1117CH-3.3TRG1AZ1117CH-3.3TRG1CJ
CAD (KiCad official)
- Symbol:
AZ1117CH-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 |
|---|---|---|
az1117ch-3-3trg1.step |
64 KB | You want the bare part, or you mark your own boards. |
az1117ch-3-3trg1-etched.step |
2.2 MB | You want the part with AZ1117CH-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: 559 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 datasheet (24 pp, sha256
8333717aa7b5f90f, 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).