RT9013-12GB from Richtek Tech, in a SOT-23-5. 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	VIN	power_in	Supply Input. Accepts 2.2V to 5.5V (absolute max 6V). Decouple with a 1uF ceramic (X7R) capacitor to GND close to the pin.
2	GND	power_in	Common Ground. Return for input, output, and enable circuitry.
3	EN	input	Enable Input Logic, Active High. Drive above VIH (1.6V min) to enable regulator; drive below VIL (0.6V max) or leave low to enter shutdown mode (~0.7uA). Absolute max 6V; enable pin current ~0.1uA typical.
4	NC	unconnected	No Internal Connection. Leave floating or tie to GND for mechanical stability.
5	VOUT	power_out	Regulator Output. Fixed 1.2V (RT9013-12), +/-2% accuracy at 10mA, up to 500mA load. Requires a 1uF ceramic (X7R) output capacitor for stability.

Key specifications

Parameter	Value
Manufacturer	Richtek Tech
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

RT9013-12GBB
RT9013-12GBU5
RT9013-12GBY
RT9013-12GBQW

CAD (KiCad official)

Symbol: RT9013-12GB
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rt9013-12gb.step`	85 KB	You want the bare part, or you mark your own boards.
`rt9013-12gb-etched.step`	2.1 MB	You want the part with `RT9013-12GB` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 515 faces against 102 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: Richtek Tech datasheet (13 pp, sha256 15023cfb98e4146e, 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