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CJ13-120002020B20
Public Made by Adomby adom
Changjing Crystals, SMD3225-4P. Pinout cross-checked by two models 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
markdownCJ13-120002020B20
Changjing · Crystals · SMD3225-4P
CJ13-120002020B20 from Changjing, in a SMD3225-4P. 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 1 (pin-1 pad is the chamfered one), connected to the crystal element in the pad-layout symbol; 12.000MHz fundamental mode, CL 20pF. |
| 2 | NC | unconnected | Pad 2 is shown in the pad layout with no connection to the crystal symbol, so it is not an electrical terminal; it is a mechanical/solder pad. |
| 3 | XTAL2 | passive | Crystal terminal 2, connected to the crystal element in the pad-layout symbol, diagonal to pad 1; 12.000MHz fundamental mode, CL 20pF. |
| 4 | NC | unconnected | Pad 4 is shown in the pad layout with no connection to the crystal symbol, so it is not an electrical terminal; it is a mechanical/solder pad. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SMD3225-4P |
| 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 | -20 | 20 | ppm | 2 | ||
| Frequency Temperature Stability | -20 | 20 | ppm | 2 | |||
| Resonance Resistance | 150 | ohm | 2 | ||||
| Shunt Capacitance | C0 | 2 | pF | <2pF | 2 | ||
| Drive Level | DL | 100 | μW | <100μW | 2 | ||
| Operating Temperature Range | TOPR | -40 | 85 | °C | 2 | ||
| Storage Temperature Range | TSTG | -55 | 125 | °C | 2 | ||
| Insulation Resistance | IR | 500 | M ohm | >500 M ohms | 2 | ||
| Aging | ΔfA | -3 | 3 | ppm per Year | 2 | ||
| Nominal Frequency | f | 12 | MHz | 2 | |||
| Load Capacitance | CL | 20 | pF | 2 |
CAD (KiCad official)
- Symbol:
CJ13-120002020B20 - Footprint:
Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm - 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files:
cj13-120002020b20-etched.step/cj13-120002020b20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj13-120002020b20.step/cj13-120002020b20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (6 pp, sha256
1a2ab814d5beafdc, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).