# CN4040M00009T8188018

**JWT** · Crystals · SMD2016-4P

CN4040M00009T8188018 from JWT, in a SMD2016-4P. 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 crystal element; the datasheet's crystal connection diagram shows pin 1 as a crystal terminal paired with pin 3. |
| 2 | GND | power_in | Ground; the Top View Crystal Connection diagram labels pin 2 as GND (lid/case ground). |
| 3 | XTAL2 | passive | Crystal terminal connected to the other side of the crystal element; the datasheet's crystal connection diagram shows pin 3 as a crystal terminal paired with pin 1. |
| 4 | GND | power_in | Ground; the Top View Crystal Connection diagram labels pin 4 as GND (lid/case ground). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JWT |
| Package | SMD2016-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `CN4040M00009T8188018`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `cn4040m00009t8188018-etched.step` / `cn4040m00009t8188018-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn4040m00009t8188018.step` / `cn4040m00009t8188018.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JWT datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588934644323012608) (1 pp, sha256 `ec4a8a47abf16435`, retrieved 2026-10-14, 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/cn4040m00009t8188018-datasheet.pdf)