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XB385M3-1.2

Public Unreviewed

by Ray

XINLUDA XB385M3 1 2 Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Contents

README

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XB385M3-1.2

XINLUDA · Voltage Reference · SOT-23-3

XB385M3-1.2 from XINLUDA, 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 + passive Positive (cathode) terminal of the 1.235 V bandgap reference diode. Reverse current is drawn into this pin; regulated reference voltage (~1.235 V) appears between + and −.
2 - passive Negative (anode) terminal of the 1.235 V bandgap reference diode. Normally tied to circuit ground / return.
3 DAP passive Die Attach Pad (DAP). Not electrically part of the reference circuit; should be connected to Pin 2 (anode) or left floating.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • XB385M3-1.2

The extractor listed these alongside XB385M3-1.2, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • XB385M3-1.2XT285-1.2
  • XB385M3-1.2XT385-1.2
  • XB385M3-1.2XL285-1.2
  • XB385M3-1.2XL385-1.2

CAD (KiCad official)

  • Symbol: XB385M3-1.2
  • 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
xb385m3-1-2.step 59 KB You want the bare part, or you mark your own boards.
xb385m3-1-2-etched.step 2.0 MB You want the part with XB385M3-1.2 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 491 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: XINLUDA datasheet (12 pp, sha256 8409d80bd41e2abd, 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