# XC322540MOB4SA-18

**YXC Crystal Oscillators** · Crystals · SMD3225-4P

XC322540MOB4SA-18 from YXC Crystal Oscillators, 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 through the crystal to pad #3 (diagonal connection in the top-view crystal connection drawing). |
| 2 | GND | power_in | Marked GND in the recommended land pattern drawing; this is the case/ground pad. |
| 3 | XTAL2 | passive | Crystal terminal connected through the crystal to pad #1 (diagonal connection in the top-view crystal connection drawing). |
| 4 | GND | power_in | Marked GND in the recommended land pattern drawing; this is the case/ground pad. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YXC Crystal Oscillators |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `XC322540MOB4SA-18`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `xc322540mob4sa-18-etched.step` / `xc322540mob4sa-18-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc322540mob4sa-18.step` / `xc322540mob4sa-18.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YXC Crystal Oscillators datasheet](docs/xc322540mob4sa-18-datasheet.pdf) (1 pp, sha256 `964d358af3a75090`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/xc322540mob4sa-18-datasheet.pdf)