# CN4040M00010T8188016

**JWT** · Crystals · SMD2016-4P

CN4040M00010T8188016 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 1 of the 40.000MHz AT-cut resonator (CL 10pF, drive level 1 to 100uW, typical 10uW). |
| 2 | GND | power_in | Pad marked GND in the crystal connection view, connected to the metal lid. |
| 3 | XTAL2 | passive | Crystal terminal 2 of the 40.000MHz AT-cut resonator (CL 10pF, drive level 1 to 100uW, typical 10uW). |
| 4 | GND | power_in | Pad marked GND in the crystal connection view, connected to the metal lid. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `CN4040M00010T8188016`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `cn4040m00010t8188016-etched.step` / `cn4040m00010t8188016-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn4040m00010t8188016.step` / `cn4040m00010t8188016.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/8590226897860141056) (10 pp, sha256 `478be829142f8500`, retrieved 2026-10-13, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/cn4040m00010t8188016-datasheet.pdf)