APX803L20-17SA-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	Reset output. Open-drain, active-low. Asserts low whenever VCC falls below the internally fixed threshold (1.7 V for the -17 option) and remains asserted for the reset active timeout (220 ms for the L20 option) after VCC recovers above the release threshold. Requires an external pull-up (typ. 100 kΩ per the typical applications circuit). Absolute max VRESET = 6.0 V; VOL ≤ 0.4 V at ISINK = 3.5 mA.
3	VCC	power_in	Operating voltage input; also the monitored supply. Operating range 0.9 V to 5.5 V (absolute max 6.0 V). Typical bypass 100 nF to GND per typical applications circuit. Supply current 1 µA typ, 2.5 µA max.

Key specifications

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

Ordering variants

APX803L20-17SA-7
APX803L20-17SA-7C3
APX803L20-17SA-7SR
APX803L20-17SA-7W
APX803L20-17SA-7W5

CAD (KiCad official)

Symbol: APX803L20-17SA-7
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Diodes Incorporated datasheet (22 pp, sha256 849cd25d6fd15081, 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