APX809S05-29SA-7 from Diodes Incorporated, in a SOT-23. 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 device.
2	RESET	output	Active-low push-pull RESET output (APX809S variant). Asserts low when VCC drops below the 2.93V (typ) threshold and remains low for at least 240ms (tDELAY) after VCC returns above threshold. Guaranteed valid logic state down to VCC = 1V. VOL <= 0.4V @ ISINK = 3.2mA; VOH >= 0.8*VCC @ ISOURCE = 500µA.
3	VCC	power_in	Operating voltage input, 1.0V to 5.5V recommended (6.0V abs max). Also the monitored supply; internal comparator trips at VTH = 2.89-2.97V (typ 2.93V) for the -29 option. 7µA typical supply current, 100nF decoupling capacitor recommended.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

APX809S05-29SA-7
APX809S05-29SA-7SR-7

CAD (KiCad official)

Symbol: APX809S05-29SA-7
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`apx809s05-29sa-7.step`	59 KB	You want the bare part, or you mark your own boards.
`apx809s05-29sa-7-etched.step`	3.0 MB	You want the part with `APX809S05-29SA-7` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 700 faces against 69 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 datasheet (10 pp, sha256 b644892b2c8d0948, 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