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CJ15-260001907B15

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Changjing Crystals, SMD2520-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CJ15-260001907B15

Changjing · Crystals · SMD2520-4P

CJ15-260001907B15 from Changjing, in a SMD2520-4P. 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 XTAL1 passive Crystal terminal, the chamfered pad-1 marker pad in the bottom view, wired to one side of the 26MHz resonator element.
2 NC unconnected Pad 2 has no connection to the resonator element in the bottom-view drawing, so it is left unconnected or tied to ground.
3 XTAL2 passive Crystal terminal, wired to the other side of the 26MHz resonator element, diagonally opposite pad 1.
4 NC unconnected Pad 4 has no connection to the resonator element in the bottom-view drawing, so it is left unconnected or tied to ground.

Key specifications

Parameter Value
Manufacturer Changjing
Package SMD2520-4P
Category Crystal Oscillator/Oscillator/Resonator
Pins 4

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 -7 7 ppm 2
Frequency Temperature Stability Δf/f -15 15 ppm 2
Aging ΔfA -3 3 ppm per year 2
Resonance Resistance R1 80 ohm 2
Shunt Capacitance C0 2 pF 2
Drive Level DL 50 μW 2
Insulation Resistance IR 500 M ohms 2
Operating Temperature Range TOPR -40 85 °C 2
Storage Temperature Range TSTG -55 125 °C 2
Nominal Frequency f 26 MHz 2
Load Capacitance CL 19 pF 2

CAD (KiCad official)

  • Symbol: CJ15-260001907B15
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: cj15-260001907b15-etched.step / cj15-260001907b15-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj15-260001907b15.step / cj15-260001907b15.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (6 pp, sha256 01685e13f6d7d6cf, retrieved 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (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