# X1E0000210481

**Seiko Epson** · Crystals · SMD3225-4P

X1E0000210481 from Seiko Epson, 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 | #1 | passive | Crystal terminal of the 30.000000 MHz fundamental unit (CL 12 pF, drive level 10 to 200 µW, motional resistance 40 Ω max), not connected to the cover per the internal connection diagram. |
| 2 | #2 | power_in | Internally connected to the metal cover; the datasheet instructs that it be connected to ground. |
| 3 | #3 | passive | Crystal terminal of the 30.000000 MHz fundamental unit (CL 12 pF, drive level 10 to 200 µW, motional resistance 40 Ω max), not connected to the cover per the internal connection diagram. |
| 4 | #4 | power_in | Internally connected to the metal cover; the datasheet instructs that it be connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `X1E0000210481`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x1e0000210481-etched.step` / `x1e0000210481-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x1e0000210481.step` / `x1e0000210481.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907202664386561) (3 pp, sha256 `f5c798b90d6e6064`, retrieved 2026-10-13, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/x1e0000210481-datasheet.pdf)