# L327S250Q11L

**Lucki** · Crystals · SMD3225-4P

L327S250Q11L from Lucki, 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 connected to one side of the quartz resonator (25.000 MHz, 16 pF load), marked with the chamfered pad; the connection drawing shows it linked to the resonator. |
| 2 | GND | power_in | Pad labelled GND in the connection drawing, to be connected to ground (likely the metal lid). |
| 3 | XTAL2 | passive | Crystal terminal connected to the other side of the quartz resonator (25.000 MHz, 16 pF load) per the connection drawing. |
| 4 | GND | power_in | Pad labelled GND in the connection drawing, to be connected to ground (likely the metal lid). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lucki |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency Tolerance | △F/F0 | -10 |  | 10 | ppm | 25℃±3℃ | 3 |
| Frequency Stability | TC | -10 |  | 10 | ppm |  | 3 |
| Operating Temperature | Topr | -20 |  | 75 | ℃ |  | 3 |
| Storage Temperature | Tstg | -55 |  | 125 | ℃ |  | 3 |
| Effective Resistance | RR |  |  | 20 | Ω |  | 3 |
| Shunt Capacitance | C0 |  |  | 2 | pF |  | 3 |
| Insulation Resistance | IR | 500 |  |  | MΩ | at DC 100 V | 3 |
| Aging | Fa | -2 |  | 2 | ppm | Per year | 3 |
| Nominal Frequency | F0 |  | 25 |  | MHz |  | 3 |
| Load Capacitance | CL |  | 16 |  | pF |  | 3 |

## CAD (KiCad official)

- Symbol: `L327S250Q11L`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `l327s250q11l-etched.step` / `l327s250q11l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l327s250q11l.step` / `l327s250q11l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Lucki datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603184070042005504) (9 pp, sha256 `7ba48c998925a70d`, retrieved 2026-10-13, 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/l327s250q11l-datasheet.pdf)