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CJ02-300001220B20

Public Made by Adom

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

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CJ02-300001220B20

Changjing · Crystals · HC-49S

CJ02-300001220B20 from Changjing, in a HC-49S. 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
Category Crystals, Oscillators, Resonators
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
Frequency Tolerance Δf/f -20 20 ppm 2
Frequency Temperature Stability -20 20 ppm 2
Resonance Resistance 40 ohms 2
Shunt Capacitance C0 7 pF 2
Drive Level DL 300 μW 2
Operating Temperature Range TOPR -40 85 °C 2
Storage Temperature Range TSTG -55 125 °C 2
Insulation Resistance IR 500 M ohms 2
Aging Δf A -3 3 ppm per Year 2
Nominal Frequency f 30 MHz 2
Load Capacitance CL 12 pF 2

CAD (KiCad official)

  • Symbol: CJ02-300001220B20
  • Footprint: Crystal:Crystal_HC49-4H_Vertical
  • 3D model: HC-49S (KiCad packages3D, STEP)
  • 3D model files: cj02-300001220b20-etched.step / cj02-300001220b20-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj02-300001220b20.step / cj02-300001220b20.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 ``, retrieved 2026-10-16, 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