# SWXCHACF0-25.000000

**Starwave** · Crystals · SMD3225-4P

SWXCHACF0-25.000000 from Starwave, 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 shown in the internal view connection on the marking/dimensions drawing; the extracted text does not state its function or limits, so confirm against the drawing. |
| 2 | GND | power_in | Pad marked GND in the internal view connection, tied to the package ground. |
| 3 | 3 | passive | Crystal terminal shown in the internal view connection on the marking/dimensions drawing; the extracted text does not state its function or limits, so confirm against the drawing. |
| 4 | GND | power_in | Pad marked GND in the internal view connection, tied to the package ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Starwave |
| Package | SMD3225-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 4 |
| Storage temperature range |  | -40 |  | 125 | ℃ |  | 4 |
| Frequency tolerance at 25 ℃ |  | -10 |  | 10 | ppm | shift to -5ppm at 25 ℃ ± 3 ℃ | 4 |
| Frequency tolerance over operating temperature range |  | -30 |  | 30 | ppm | Over Operating Temp. Range (Reference 25℃) | 4 |
| Aging |  | -3 |  | 3 | ppm | 1st Year | 4 |
| Effective resistance | Rr |  |  | 65 | Ω |  | 4 |
| Drive level | DL |  |  | 100 | uW |  | 4 |
| Insulation resistance |  | 500 |  |  | MΩ | at DC 100V | 4 |
| Pulling sensitivity |  | 15 |  | 19 | ppm/pF |  | 4 |
| Nominal frequency | FL |  | 25 |  | MHz |  | 4 |
| Load capacitance | CL |  | 20 |  | pF |  | 4 |
| Shunt capacitance | C0 |  | 1.3 |  | pF |  | 4 |
| Motional capacitance | C1 |  | 3 |  | fF |  | 4 |

## CAD (KiCad official)

- Symbol: `SWXCHACF0-25.000000`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `swxchacf0-25-000000-etched.step` / `swxchacf0-25-000000-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `swxchacf0-25-000000.step` / `swxchacf0-25-000000.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Starwave datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590316534339178496) (8 pp, sha256 `4429326709131419`, retrieved 2026-10-15, 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/swxchacf0-25-000000-datasheet.pdf)