# CM4040M00010T8188029

**JWT** · Crystals · SMD2520-4P

CM4040M00010T8188029 from JWT, in a SMD2520-4P. 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 1, connected across the quartz element to pin 3 per the top-view crystal connection drawing (12.000~54.000MHz fundamental AT cut). |
| 2 | GND | power_in | Ground pin, labeled GND in the top-view crystal connection drawing. |
| 3 | XTAL2 | passive | Crystal terminal 2, connected across the quartz element to pin 1 per the top-view crystal connection drawing. |
| 4 | GND | power_in | Ground pin, labeled GND in the top-view crystal connection drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JWT |
| Package | SMD2520-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `CM4040M00010T8188029`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `cm4040m00010t8188029-etched.step` / `cm4040m00010t8188029-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cm4040m00010t8188029.step` / `cm4040m00010t8188029.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JWT datasheet](docs/cm4040m00010t8188029-datasheet.pdf) (1 pp, sha256 `42e8a67f04b0b671`, retrieved 2026-10-22, 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/cm4040m00010t8188029-datasheet.pdf)