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CC6903SO-20A

Public Made by Adom

by adom

Cross chip Current Sensors, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs cc6903so-20a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers cc6903so-20a: viewers · Ray 1mo ago
cc6903so-20a-etched.fit.json cc6903so-20a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
cc6903so-20a-etched.glb cc6903so-20a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
cc6903so-20a-etched.step cc6903so-20a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
cc6903so-20a.glb Publish 0.1.0 · Ray 1mo ago
cc6903so-20a.kicad_mod Publish 0.1.0 · Ray 1mo ago
cc6903so-20a.kicad_sym Publish 0.1.0 · Ray 1mo ago
cc6903so-20a.lbr Publish 0.1.0 · Ray 1mo ago
cc6903so-20a.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md cc6903so-20a: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 18d ago

CC6903SO-20A

Cross chip · Current Sensors · SOP-8

CC6903SO-20A from Cross chip, 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 IP+ passive Primary current sense positive terminal. Internally tied to pin 2; both pins carry the sensed current into the integrated primary conductor (Rp ≈ 1.5 mΩ). Galvanically isolated (100 VAC) from the signal-side pins.
2 IP+ passive Primary current sense positive terminal (paralleled with pin 1). Together pins 1-2 form the positive side of the integrated primary conductor.
3 IP- passive Primary current sense negative terminal. Internally tied to pin 4; both pins form the return side of the integrated primary conductor. Galvanically isolated (100 VAC) from the signal-side pins.
4 IP- passive Primary current sense negative terminal (paralleled with pin 3). Together pins 3-4 form the negative side of the integrated primary conductor.
5 GND power_in Signal ground. Ground reference for the internal analog circuitry and OUT pin.
6 NC unconnected No connect. Must be left floating (需悬空) per the pin description table.
7 OUT output Analog signal output. Ratiometric to VCC with a quiescent level of VCC/2 (typ 1.65 V at 3.3 V VCC). For the -20A variant, VOUT = VCC/2 + 0.066 × IP(A). Source capability 400 µA, sink capability 30 mA; guaranteed linear range 0.33-2.97 V.
8 VCC power_in Supply voltage input. Recommended operating range 3.0-3.6 V (absolute max 7 V). Typical ICC ≈ 5 mA. Bypass with 0.1 µF to GND close to the pin.

Key specifications

Parameter Value
Manufacturer Cross chip
Package SOP-8
Category Sensor
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • CC6903SO-10A
  • CC6903SO-20A
  • CC6903SO-30A

CAD (KiCad official)

  • Symbol: CC6903SO-20A
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cc6903so-20a-etched.step / cc6903so-20a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cc6903so-20a.step / cc6903so-20a.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
cc6903so-20a.step 122 KB You want the bare part, or you mark your own boards.
cc6903so-20a-etched.step 2.9 MB You want the part with CC6903SO-20A already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 665 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: Cross chip datasheet (12 pp, sha256 4caefefced8b515b, 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