# 3S30000079

**YL Failong Crystal** · Crystals · SMD3225-4P

3S30000079 from YL Failong Crystal, 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 | Xtal terminal (Input) | input | Crystal terminal labelled as the Input side of the crystal in the connection diagram (top view), with no further electrical limits stated in the datasheet. |
| 2 | GND terminal | power_in | Ground terminal per the connection diagram (top view), with no further electrical limits stated in the datasheet. |
| 3 | Xtal terminal (Output) | output | Crystal terminal labelled as the Output side of the crystal in the connection diagram (top view), with no further electrical limits stated in the datasheet. |
| 4 | GND terminal | power_in | Ground terminal per the connection diagram (top view), with no further electrical limits stated in the datasheet. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YL Failong Crystal |
| Package | SMD3225-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Insulation Resistance | IR | 500 |  |  | M-ohms | at DC 100V | 4 |
| Equivalent series resistance | ESR |  |  | 40 | ohms |  | 4 |
| Storage Temperature |  | -40 |  | 85 | ℃ |  | 4 |
| Operating Temperature |  | -20 |  | 70 | ℃ |  | 4 |
| Shunt Capacitance | C0 |  |  | 3 | pF |  | 4 |
| Drive Level | DL |  |  | 200 | uW |  | 4 |
| Frequency Tolerance |  | -10 |  | 10 | ppm | at 25±2℃ | 4 |
| Frequency Stability |  | -3 |  | 3 | ppm | at -20～+70℃ (reference 25℃) | 4 |
| Load Capacitance | CL |  | 12 |  | pF |  | 4 |
| Nominal Frequency | FL |  | 30 |  | MHz |  | 4 |

## CAD (KiCad official)

- Symbol: `3S30000079`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `3s30000079-etched.step` / `3s30000079-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3s30000079.step` / `3s30000079.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YL Failong Crystal datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933451454296064) (11 pp, sha256 `b6fd62081c9a6bdd`, retrieved 2026-10-20, 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).

[Datasheet PDF](docs/3s30000079-datasheet.pdf)