# 8Z12000011

**TXC Corp** · Crystals · SMD2520-4P

8Z12000011 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 (pin 1, marked by the corner chamfer on the bottom view); the connection drawing shows the crystal element between pins 1 and 3, for load capacitance of 6~20 pF. |
| 2 | GND | power_in | Ground connection per the connection diagram, usually tied to ground. |
| 3 | XTAL2 | passive | Crystal terminal diagonal to pin 1; the connection drawing shows the crystal element between pins 1 and 3, for load capacitance of 6~20 pF. |
| 4 | GND | power_in | Ground connection per the connection diagram, usually tied to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TXC Corp |
| Package | SMD2520-4P |
| Category | Crystals, Oscillators, Resonators |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency Tolerance | FT | -10 |  | 10 | ppm | @25°C±3°C | 1 |
| Frequency Stability over Operating Temp. Range (ref 25°C) | ST | -20 |  | 20 | ppm | @-40~85°C | 1 |
| Frequency Stability over Operating Temp. Range (ref 25°C) | ST | -30 |  | 30 | ppm | @-40~105°C | 1 |
| Operating Temperature | Topr | -40 | 25 | 105 | °C |  | 1 |
| Drive Level | DL |  | 100 | 300 | uW |  | 1 |
| Equivalent Series Resistance | ESR |  |  | 180 | Ohm | 12~16MHz | 1 |
| Equivalent Series Resistance | ESR |  |  | 100 | Ohm | 16~20MHz | 1 |
| Equivalent Series Resistance | ESR |  |  | 60 | Ohm | 20~66MHz | 1 |
| Aging |  | -5 |  | 5 | ppm | 1st Year (printed ± 3, ± 5) | 1 |
| Nominal Frequency (series range) | F | 12 |  | 66 | MHz | 12 ~ 66 MHz | 1 |
| Load Capacitance (series range) | CL | 6 |  | 20 | pF | 6~20 pF | 1 |

## CAD (KiCad official)

- Symbol: `8Z12000011`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `8z12000011-etched.step` / `8z12000011-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `8z12000011.step` / `8z12000011.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TXC Corp datasheet](docs/8z12000011-datasheet.pdf) (1 pp, sha256 `8d4a2950e1baad5a`, retrieved 2026-10-22, 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/8z12000011-datasheet.pdf)