REF3030AIDBZR from Texas Instruments, 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	IN	power_in	Supply input voltage (V+). Operates from VREF + 1 mV (unloaded) up to 5.5 V. Absolute maximum V+ to V- is 7.0 V. Quiescent current is 42 µA typical (50 µA max).
2	OUT	output	Precision 3.0 V reference output. 0.2% initial accuracy, 50 ppm/°C max drift (0°C to 70°C), sources and sinks up to 25 mA. Does not require an external load capacitor; short-circuit current is 45 mA typical.
3	GND	power_in	Ground / device common (V-). Reference for both the input supply and the output voltage.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

REF3030AIDBZT
REF3030AIDBZR

CAD (KiCad official)

Symbol: REF3030AIDBZR
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ref3030aidbzr.step`	59 KB	You want the bare part, or you mark your own boards.
`ref3030aidbzr-etched.step`	2.3 MB	You want the part with `REF3030AIDBZR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 578 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: Texas Instruments datasheet (17 pp, sha256 ffa7c37e7b71c282, 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