# 3225-27.12-18-10-10

**Suzhou Liming Elec** · Crystals · SMD3225-4P

3225-27.12-18-10-10 from Suzhou Liming Elec, 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 internal quartz resonator, with the pad marked by a chamfered corner in the bottom view. |
| 2 | GND | power_in | Ground pad, connected to the metal cap on top and internally tied to pad #4. |
| 3 | XTAL2 | passive | Crystal terminal connected to the other side of the internal quartz resonator. |
| 4 | GND | power_in | Ground pad, connected to the metal cap on top and internally tied to pad #2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Suzhou Liming Elec |
| 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 at +25°C (decoded from MPN field 4) |  | -10 |  | 10 | ×10-6 | at +25°C | 2 |
| Frequency stability vs. temperature (decoded from MPN field 5) |  | -10 |  | 10 | ×10-6 | over operating temperature range | 1 |
| Series resistance |  |  |  | 50 | Ω | 27~60MHz, fundamental mode | 1 |
| Drive level |  |  | 10 | 200 | μW |  | 1 |
| Load capacitance range | CL | 6 |  | 32 | pF | or series; this MPN specifies 18 pF (MPN field 3) | 1 |
| Operating temperature range (option 1) |  | -10 |  | 60 | °C |  | 1 |
| Operating temperature range (option 2) |  | -20 |  | 70 | °C |  | 1 |
| Operating temperature range (option 3) |  | -40 |  | 85 | °C |  | 1 |
| Storage temperature range |  | -55 |  | 125 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `3225-27.12-18-10-10`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `3225-27-12-18-10-10-etched.step` / `3225-27-12-18-10-10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3225-27-12-18-10-10.step` / `3225-27-12-18-10-10.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Suzhou Liming Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227414816632832) (2 pp, sha256 `25e43438c5a0428e`, retrieved 2026-10-16, 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/3225-27-12-18-10-10-datasheet.pdf)