component

LM385M3-2.5

Public Unreviewed

by Ray

HGSEMI LM385M3 2 5 TR Voltage Reference, SOT-23. 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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LM385M3-2.5

HGSEMI · Voltage Reference · SOT-23

LM385M3-2.5 from HGSEMI, 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 CATHODE passive Cathode (阴极) of the shunt voltage reference. Reverse breakdown pin held at the nominal reference voltage (2.5 V nom, 2.425-2.575 V over LM385-2.5 grade) when biased with 100 µA to 20 mA reverse current.
2 ANODE passive Anode (阳极) of the shunt voltage reference. Normally tied to circuit ground / return, with reverse bias current flowing from CATHODE to ANODE.
3 NC unconnected No internal connection (内部无连接). Leave floating or tie as convenient for PCB routing.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM385M3-2.5/TR
  • LM385BM3-2.5/TR
  • LM385AM3-2.5/TR
  • LM385Z-2.5
  • LM385BZ-2.5
  • LM385AZ-2.5
  • LM385M-2.5/TR
  • LM385BM-2.5/TR
  • LM385AM-2.5/TR
  • LM385MM-2.5/TR
  • LM385BMM-2.5/TR
  • LM385AMM-2.5/TR
  • LM385DQ3-2.5/TR
  • LM385BDQ3-2.5/TR
  • LM385ADQ3-2.5/TR
  • LM385DQ2-2.5/TR
  • LM385BDQ2-2.5/TR
  • LM385ADQ2-2.5/TR

CAD (KiCad official)

  • Symbol: LM385M3-2.5
  • 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
lm385m3-2-5.step 59 KB You want the bare part, or you mark your own boards.
lm385m3-2-5-etched.step 2.0 MB You want the part with LM385M3-2.5 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 478 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)
  • 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