# 8Z40000055

**TXC Corp** · Crystals · SMD2520-4P

8Z40000055 from TXC Corp, 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, connected to one side of the crystal blank per the connection diagram, with pin 1 at the marked corner. |
| 2 | GND | power_in | Ground connection, labeled GND in the connection diagram (lid/case ground). |
| 3 | XTAL2 | passive | Crystal terminal, connected to the other side of the crystal blank per the connection diagram. |
| 4 | GND | power_in | Ground connection, labeled GND in the connection diagram (lid/case ground). |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Temperature |  | -40 |  | 85 | ℃ |  | 4 |
| Frequency Tolerance |  | -10 |  | 10 | ppm | at 25 ℃ ± 3 ℃ | 4 |
| Nominal Frequency | FL |  | 40 |  | MHz |  | 4 |

## CAD (KiCad official)

- Symbol: `8Z40000055`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `8z40000055-etched.step` / `8z40000055-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `8z40000055.step` / `8z40000055.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TXC Corp datasheet](docs/8z40000055-datasheet.pdf) (8 pp, sha256 `f04d082b51a7d2ec`, retrieved 2026-10-21, tier: lcsc)
- **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/8z40000055-datasheet.pdf)