component

CJ03-2211842020A20

Public Made by Adom

by adom

Changjing Crystals, HC-49S-SMD. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentcrystal oscillator-oscillator-resonatorcj03-2211842020a20factory-2.0.0extractor-text

Changed since verified CJ03-2211842020A20

by Ray · last 30 Oct 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: CJ03-2211842020A20 · HC-49S-SMD · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: unpolarised two-terminal part: pins 1 and 2 by library convention, no names to check
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: Crystal_SMD_HC49-SD
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-8pjxb6_w/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! cj03-2211842020a20.kicad_sym✓ cj03-2211842020a20.kicad_mod✓ cj03-2211842020a20.step
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers cj03-2211842020a20: symbol repaired (crystal) · Ray
cj03-2211842020a20-etched.glb Publish 0.1.0 · Ray
cj03-2211842020a20-etched.step cj03-2211842020a20: factory component page (tier=lcsc) · Ray
cj03-2211842020a20-hero.glb cj03-2211842020a20: hero GLB from the etched model (keeps the MPN mark) · Ray
cj03-2211842020a20-hero.overlay.json Publish 0.1.0 · Ray
cj03-2211842020a20.glb Publish 0.1.0 · Ray
cj03-2211842020a20.kicad_mod Publish 0.1.0 · Ray
cj03-2211842020a20.kicad_sym cj03-2211842020a20: symbol repaired (crystal) · Ray
cj03-2211842020a20.lbr cj03-2211842020a20: symbol repaired (crystal) · Ray
cj03-2211842020a20.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray

CJ03-2211842020A20

Changjing · Crystals · HC-49S-SMD

CJ03-2211842020A20 from Changjing, in a HC-49S-SMD. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1 passive Terminal 1 of a two-terminal crystal; either orientation.
2 2 passive Terminal 2 of a two-terminal crystal; either orientation.

Key specifications

Parameter Value
Manufacturer Changjing
Package HC-49S-SMD
Category Crystal Oscillator/Oscillator/Resonator
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Nominal Frequency f 22.1184 MHz 2
Load Capacitance CL 20 pF 2
Frequency Tolerance △f/f -20 20 ppm 2
Frequency Temperature Stability -20 20 ppm 2
Resonance Resistance 60 ohm Fundamental mode 2
Shunt Capacitance C0 7 pF 2
Drive Level DL 300 μW 2
Operating Temperature Range TOPR -20 70 °C 2
Storage Temperature Range TSTG -55 125 °C 2
Insulation Resistance IR 500 M ohms 2
Aging △fA -3 3 ppm per Year 2

CAD (KiCad official)

  • Symbol: CJ03-2211842020A20
  • Footprint: Crystal:Crystal_SMD_HC49-SD
  • 3D model: HC-49S-SMD (KiCad packages3D, STEP)
  • 3D model files: cj03-2211842020a20-etched.step / cj03-2211842020a20-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj03-2211842020a20.step / cj03-2211842020a20.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Changjing datasheet (6 pp, sha256 ``, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary crystal numbering (convention), consensus off (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF