LR8341A-T33 from LR, in a SOT-23-3L. 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	VSS	power_in	Ground / negative supply reference. All voltages referenced to this pin.
2	VOUT	power_out	Regulated 3.3V output. Delivers up to 100mA typical (160mA absolute max). Requires a 1-10µF output capacitor close to the pin for stability.
3	VIN	power_in	Unregulated input supply. Operating range up to 40V (absolute max 55V). VIN must be at least VOUT + dropout (typ 750mV @ 100mA). Bypass with a suitable input capacitor.

Key specifications

Parameter	Value
Manufacturer	LR
Package	SOT-23-3L
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

LR8341A-T33T25
LR8341A-T33T27
LR8341A-T33T30
LR8341A-T33
LR8341A-T33T36
LR8341A-T33T40
LR8341A-T33T44
LR8341A-T33T50
LR8341A-T33M25
LR8341A-T33M27
LR8341A-T33M30
LR8341A-T33M33
LR8341A-T33M36
LR8341A-T33M40
LR8341A-T33M44
LR8341A-T33M50

CAD (KiCad official)

Symbol: LR8341A-T33
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lr8341a-t33.step`	59 KB	You want the bare part, or you mark your own boards.
`lr8341a-t33-etched.step`	1.9 MB	You want the part with `LR8341A-T33` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 476 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: LR datasheet (13 pp, sha256 0ef57f5e903211ad, 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