AZ1117D-3.3TRE1 from Diodes, 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 3.3V regulator (this pin becomes ADJ on the -ADJ adjustable variant). Ties the internal reference and error-amplifier return to system ground; carries the quiescent current (~5 mA typ, 10 mA max).
2	OUTPUT	power_out	Regulated 3.3V output (VOUT = 3.3V nominal, 1A max continuous). Requires a 22µF (tantalum recommended) or larger output capacitor for stability and to meet the PSRR/dropout specs. Internally current-limited to ~1.35A typ; thermal shutdown activates at TJ ≈ +150°C.
3	INPUT	power_in	Unregulated DC input, VIN. Recommended operating range up to 15V (absolute maximum 20V). Must be at least VOUT + VDROP (≥ ~4.45V at 1A load for the 3.3V version). A 10µF input bypass capacitor to GND is recommended near the pin.
TAB	OUTPUT (Tab)	power_out	Exposed metal heat-sink tab on the back of the TO-252 package, electrically common with pin 2 (OUTPUT). Solder to a copper pour tied to VOUT for thermal dissipation; θJC ≈ 17 °C/W for TO252-2.

Key specifications

Parameter	Value
Manufacturer	Diodes
Package	TO-252-2
Category	PMIC
Pins	4

Ordering variants

AZ1117D-3.3TRE1
AZ1117D-3.3TRE1AZ1117H-3.3TRE1
AZ1117D-3.3TRE1AZ1117R-3.3TRE1
AZ1117D-3.3TRE1AZ1117T-3.3E1
AZ1117D-3.3TRE1AZ1117S-3.3TRE1

CAD (KiCad official)

Symbol: AZ1117D-3.3TRE1
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
`az1117d-3-3tre1.step`	119 KB	You want the bare part, or you mark your own boards.
`az1117d-3-3tre1-etched.step`	1.9 MB	You want the part with `AZ1117D-3.3TRE1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 519 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 datasheet (32 pp, sha256 a54ad8d300c88315, 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).

Datasheet PDF