component
CJ15-120001210B20
Public Made by Adomby adom
Changjing Crystals, SMD2520-4P. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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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README
markdownCJ15-120001210B20
Changjing · Crystals · SMD2520-4P
CJ15-120001210B20 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 (chamfered pad) connected to one side of the 12MHz resonator in the bottom-view schematic; the unit is 12pF load, fundamental mode. |
| 2 | NC | unconnected | Pad shown with no connection to the resonator in the bottom-view drawing; used for mechanical mounting. |
| 3 | XTAL2 | passive | Crystal terminal connected to the other side of the 12MHz resonator in the bottom-view schematic; the unit is 12pF load, fundamental mode. |
| 4 | NC | unconnected | Pad shown with no connection to the resonator in the bottom-view drawing; used for mechanical mounting. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SMD2520-4P |
| Category | Crystals, Oscillators, Resonators |
| 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 | △f/f | -10 | 10 | ppm | 2 | ||
| Frequency Temperature Stability | -20 | 20 | ppm | 2 | |||
| Aging | △fA | -3 | 3 | ppm per Year | 2 | ||
| Resonance Resistance | 150 | ohms | 2 | ||||
| Shunt Capacitance | C0 | 2 | pF | 2 | |||
| Drive Level | DL | 100 | 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 | |||
| Nominal Frequency | f | 12 | MHz | 2 | |||
| Load Capacitance | CL | 12 | pF | 2 |
CAD (KiCad official)
- Symbol:
CJ15-120001210B20 - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
cj15-120001210b20-etched.step/cj15-120001210b20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj15-120001210b20.step/cj15-120001210b20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (8 pp, sha256
c4eeee1b4eb210c0, retrieved 2026-10-21, tier: lcsc) - 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).