# SX2B40.000F1210F30

**Shenzhen SCTF Elec** · Crystals · SMD2520-4P

SX2B40.000F1210F30 from Shenzhen SCTF Elec, 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 | Xtal | passive | Crystal terminal 1; connects to one side of the crystal (pad 1 is the chamfered pad in the bottom view). |
| 2 | GND | power_in | Ground pin, listed as GND in the pin function table. |
| 3 | Xtal | passive | Crystal terminal 2; connects to the other side of the crystal. |
| 4 | GND | power_in | Ground pin, listed as GND in the pin function table. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen SCTF Elec |
| Package | SMD2520-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `SX2B40.000F1210F30`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `sx2b40-000f1210f30-etched.step` / `sx2b40-000f1210f30-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sx2b40-000f1210f30.step` / `sx2b40-000f1210f30.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen SCTF Elec datasheet](docs/sx2b40-000f1210f30-datasheet.pdf) (5 pp, sha256 `1da82fad6055ca0d`, retrieved 2026-10-21, 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/sx2b40-000f1210f30-datasheet.pdf)