# CM4040M00009T8188028

**JWT** · Crystals · SMD2520-4P

CM4040M00009T8188028 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; the Top View Crystal Connection drawing marks only pins 2 and 4 as GND, so pin 1 is a crystal connection. |
| 2 | GND | power_in | Ground (lid/case) connection, labeled GND in the Top View Crystal Connection drawing. |
| 3 | XTAL2 | passive | Crystal terminal; the Top View Crystal Connection drawing marks only pins 2 and 4 as GND, so pin 3 is a crystal connection. |
| 4 | GND | power_in | Ground (lid/case) connection, 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: `CM4040M00009T8188028`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `cm4040m00009t8188028-etched.step` / `cm4040m00009t8188028-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cm4040m00009t8188028.step` / `cm4040m00009t8188028.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JWT datasheet](docs/cm4040m00009t8188028-datasheet.pdf) (1 pp, sha256 `0b5251da036f0ced`, 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/cm4040m00009t8188028-datasheet.pdf)