AZ1117ID-3.3TRG1 from Diodes Incorporated AZ1117ID 3 3TRG1, in a TO-252-2. 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 fixed-output AZ1117I-3.3 version, pin 1 is the GND (adjust) pin connected internally to the trimmed reference divider. Return current for both quiescent (I_Q ≈ 6mA max) and load current flows through this pin.
2	VOUT	power_out	Regulated 3.3V output (Typ 3.3V, ±1% initial accuracy, ±1.5% over temperature). Rated for ≥1A load current with 1.35A typical current limit. Requires a minimum 10µF low-ESR (<20Ω) ceramic capacitor to ground for stability.
3	VIN	power_in	Unregulated input supply. Recommended operating range is up to 15V; absolute maximum is 18V. For 3.3V output, V_IN must exceed V_OUT by the dropout voltage (typ 1.3V, max 1.4V on TO252-2 at I_OUT = 0.8A). Bypass with ≥10µF capacitor to ground.
TAB	VOUT	power_out	Exposed thermal tab, electrically connected to VOUT (pin 2). Provides the primary heat conduction path to the PCB copper - thermal resistance θ_JA drops from 100°C/W (no heatsink) to 70°C/W (soldered to 100mm² 2oz copper, 8×0.5mm vias). Solder to a copper pour that is also the V_OUT net.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated AZ1117ID 3 3TRG1
Package	TO-252-2
Category	PMIC
Pins	4

Ordering variants

AZ1117ID-3.3TRG1
AZ1117ID-3.3TRG1AZ1117IH-3.3TRG1

CAD (KiCad official)

Symbol: AZ1117ID-3.3TRG1
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-2 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`az1117id-3-3trg1.step`	119 KB	You want the bare part, or you mark your own boards.
`az1117id-3-3trg1-etched.step`	2.1 MB	You want the part with `AZ1117ID-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: 561 faces against 83 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 AZ1117ID 3 3TRG1 datasheet (17 pp, sha256 48934059d42aa84f, 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