APX811-29UG-7 from Diodes Incorporated, in a SOT-143. 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 supervisor.
2	RESET	output	Push-pull active-low reset output (APX811). Asserted low when VCC is below the 2.93 V threshold or MR is held low, and remains low for the ~200 ms (240 ms min) timeout after VCC recovers. Guaranteed logic-low for VCC > 1 V; add a 100 k pull-down if valid RESET is required for VCC < 1 V.
3	MR	input	Manual reset input, active low. Driving MR low forces RESET to become active. Minimum pulse width 100 ns.
4	VCC	power_in	Operating voltage input, 1.1 V to 5.5 V recommended (abs max 7 V). Monitored against the internal 2.93 V (typ) reset threshold on the -29 option; typical supply current 30 uA.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-143
Category	PMIC
Pins	4

Ordering variants

APX811-29UG-7

CAD (KiCad official)

Symbol: APX811-29UG-7
Footprint: Package_TO_SOT_SMD:SOT-143
3D model: SOT-143 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Diodes Incorporated datasheet (10 pp, sha256 7a730fe754bff472, 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