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LM385M3-1.2

Public Unreviewed

by Ray

HGSEMI LM385M3 1 2 TR Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

LM385M3-1.2

HGSEMI · Voltage Reference · SOT-23-3

LM385M3-1.2 from HGSEMI, 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 CATHODE passive Cathode (阴极) of the shunt voltage reference. In normal operation this pin sits at V_REF (nominal 1.235 V) above the anode when biased with 100 µA to 20 mA of reverse current.
2 ANODE passive Anode (阳极) of the shunt voltage reference. Typically tied to circuit ground / return; the reference voltage develops from cathode to anode.
3 NC unconnected No internal connection (内部无连接). Leave floating or tie to a convenient net; not electrically part of the reference.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM385M3-1.2/TR
  • LM385BM3-1.2/TR
  • LM385Z-1.2
  • LM385BZ-1.2
  • LM385M-1.2/TR
  • LM385BM-1.2/TR
  • LM385MM-1.2/TR
  • LM385BMM-1.2/TR
  • LM385DQ3-1.2/TR
  • LM385BDQ3-1.2/TR
  • LM385DQ2-1.2/TR
  • LM385BDQ2-1.2/TR

CAD (KiCad official)

  • Symbol: LM385M3-1.2
  • 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
lm385m3-1-2.step 59 KB You want the bare part, or you mark your own boards.
lm385m3-1-2-etched.step 1.9 MB You want the part with LM385M3-1.2 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 455 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: HGSEMI datasheet (12 pp, sha256 bb8ab21a5cf45a69, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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