component

LM2903M

Public Unreviewed

by Ray

HGSEMI Comparators, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmplm2903m
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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

LM2903M

HGSEMI · Comparators · SOP-8

LM2903M from HGSEMI, in a SOP-8. 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 1OUT output Open-collector output of comparator 1. Requires an external pull-up resistor to a positive supply.
2 1IN- input Inverting input of comparator 1.
3 1IN+ input Non-inverting input of comparator 1.
4 GND power_in Ground / negative supply rail (V-). Connect to 0 V in single-supply operation.
5 2IN+ input Non-inverting input of comparator 2.
6 2IN- input Inverting input of comparator 2.
7 2OUT output Open-collector output of comparator 2. Requires an external pull-up resistor to a positive supply.
8 VCC power_in Positive supply rail. Single-supply operation from 2 V to 36 V, or dual-supply +/-1 V to +/-18 V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category Op-amp/Cmp
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM2903MM

CAD (KiCad official)

  • Symbol: LM2903M
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2903m.step 122 KB You want the bare part, or you mark your own boards.
lm2903m-etched.step 1.7 MB You want the part with LM2903M already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 419 faces against 147 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 (10 pp, sha256 f17b943bc6fafd8b, 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