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CJ15-160000810B20
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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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CJ15-160000810B20
Changjing · Crystals · SMD2520-4P
CJ15-160000810B20 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 1 (chamfered pad in the bottom view, wired to the resonator symbol) for the 16.000MHz fundamental-mode resonator with 8pF load capacitance. |
| 2 | NC | unconnected | Pad 2 is not wired to the resonator in the bottom-view drawing; the datasheet does not state a function, so treat it as a non-functional solder pad. |
| 3 | XTAL2 | passive | Crystal terminal 2 (wired to the resonator symbol in the bottom view, diagonal to pad 1) for the 16.000MHz fundamental-mode resonator with 8pF load capacitance. |
| 4 | NC | unconnected | Pad 4 is not wired to the resonator in the bottom-view drawing; the datasheet does not state a function, so treat it as a non-functional solder pad. |
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 | -10 | 10 | ppm | 2 | ||
| Frequency Temperature Stability | -20 | 20 | ppm | 2 | |||
| Aging | ΔfA | -3 | 3 | ppm/year | 2 | ||
| Insulation Resistance | IR | 500 | MΩ | 2 | |||
| Operating Temperature Range | TOPR | -40 | 85 | °C | 2 | ||
| Storage Temperature Range | TSTG | -55 | 125 | °C | 2 | ||
| Resonance Resistance | 100 | ohm | 2 | ||||
| Drive Level | DL | 50 | μW | 2 | |||
| Shunt Capacitance | C0 | 2 | pF | 2 | |||
| Nominal Frequency | f | 16 | MHz | 2 | |||
| Load Capacitance | CL | 8 | pF | 2 |
CAD (KiCad official)
- Symbol:
CJ15-160000810B20 - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
cj15-160000810b20-etched.step/cj15-160000810b20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj15-160000810b20.step/cj15-160000810b20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (6 pp, sha256
1e7a03576b7ed7d8, retrieved 2026-11-06, 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).
# CJ15-160000810B20
**Changjing** · Crystals · SMD2520-4P
CJ15-160000810B20 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 1 (chamfered pad in the bottom view, wired to the resonator symbol) for the 16.000MHz fundamental-mode resonator with 8pF load capacitance. |
| 2 | NC | unconnected | Pad 2 is not wired to the resonator in the bottom-view drawing; the datasheet does not state a function, so treat it as a non-functional solder pad. |
| 3 | XTAL2 | passive | Crystal terminal 2 (wired to the resonator symbol in the bottom view, diagonal to pad 1) for the 16.000MHz fundamental-mode resonator with 8pF load capacitance. |
| 4 | NC | unconnected | Pad 4 is not wired to the resonator in the bottom-view drawing; the datasheet does not state a function, so treat it as a non-functional solder pad. |
## 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 | -10 | | 10 | ppm | | 2 |
| Frequency Temperature Stability | | -20 | | 20 | ppm | | 2 |
| Aging | ΔfA | -3 | | 3 | ppm/year | | 2 |
| Insulation Resistance | IR | 500 | | | MΩ | | 2 |
| Operating Temperature Range | TOPR | -40 | | 85 | °C | | 2 |
| Storage Temperature Range | TSTG | -55 | | 125 | °C | | 2 |
| Resonance Resistance | | | | 100 | ohm | | 2 |
| Drive Level | DL | | | 50 | μW | | 2 |
| Shunt Capacitance | C0 | | | 2 | pF | | 2 |
| Nominal Frequency | f | | 16 | | MHz | | 2 |
| Load Capacitance | CL | | 8 | | pF | | 2 |
## CAD (KiCad official)
- Symbol: `CJ15-160000810B20`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `cj15-160000810b20-etched.step` / `cj15-160000810b20-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cj15-160000810b20.step` / `cj15-160000810b20.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](docs/cj15-160000810b20-datasheet.pdf) (6 pp, sha256 `1e7a03576b7ed7d8`, 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](docs/cj15-160000810b20-datasheet.pdf)