TL432 0.5% from UMW, in a SOT-23-3. 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	R	input	Reference input. Internal error amplifier compares this pin against the 1.25 V band-gap reference; when V(R) exceeds Vref the device sinks current from cathode to anode. Reference input current Iref is typically 1.5 uA (max 4 uA); maximum reference input current rating is 6 mA.
2	K	passive	Cathode. Programmable shunt terminal; sinks current to the anode to regulate V(KA) to the set point defined by the external divider (VKA = Vref (1 + R1/R2) + Iref x R1). Maximum cathode voltage 18 V, continuous cathode current 100 mA, dynamic impedance typ 0.15 ohm.
3	A	passive	Anode. Common return terminal, typically tied to circuit ground/negative supply of the shunt reference.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

TL432 0.5%UMW TL432 0.5%

CAD (KiCad official)

Symbol: TL432 0.5%
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tl432-0-5.step`	59 KB	You want the bare part, or you mark your own boards.
`tl432-0-5-etched.step`	1.7 MB	You want the part with `TL432 0.5%` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 416 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: UMW datasheet (7 pp, sha256 3e3595dac7d171a8, 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