# 7M50070012

**TXC Corp** · Crystals · SMD3225-4P

7M50070012 from TXC Corp, in a SMD3225-4P. 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 of the 50.000000 MHz fundamental AT-cut unit (CL 19 pF, drive level max 200 uW). |
| 2 | GND | power_in | Ground pad, shown as GND in the bottom view connection drawing (lid/case connection). |
| 3 | XTAL2 | passive | Second crystal terminal of the 50.000000 MHz fundamental AT-cut unit (CL 19 pF, drive level max 200 uW). |
| 4 | GND | power_in | Ground pad, shown as GND in the bottom view connection drawing (lid/case connection). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TXC Corp |
| Package | SMD3225-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency Tolerance (at 25°C) |  | -10 |  | 10 | ppm | at 25 ℃ ± 3 ℃ | 5 |
| Frequency Stability |  | -13 |  | 13 | ppm | Over Operating Temp. Range (Reference 25℃) | 5 |
| Aging |  | -2 |  | 2 | ppm | 1st Year | 5 |
| Operating Temperature |  | -10 |  | 85 | ℃ |  | 5 |
| Storage Temperature Range |  | -55 |  | 125 | ℃ |  | 5 |
| Effective Resistance | Rr |  |  | 15 | Ω |  | 5 |
| Shunt Capacitance | C0 |  |  | 3 | pF |  | 5 |
| Drive Level | DL |  | 100 | 200 | uW |  | 5 |
| Insulation Resistance |  | 500 |  |  | MΩ | at DC 100V | 5 |
| Drive Level Dependency Resistance | RLD2 |  |  | 5 | Ω | 0.01uW~200uW~0.01uW/20 Points | 5 |
| Drive Level Dependency Resistance (DLDH2) | DLDH2 |  |  | 15 | Ω | 0.01uW~200uW~0.01uW/20 Points | 5 |
| Drive Level Dependency Frequency (FDLD) | FDLD |  |  | 3 | ppm | 0.01uW~200uW~0.01uW/20 Points | 5 |
| Drive Level Dependency Frequency (FDLDH) | FDLDH |  |  | 6 | ppm | 0.01uW~200uW~0.01uW/20 Points | 5 |
| Nominal Frequency | FL |  | 50 |  | MHz | Fundamental | 5 |
| Load Capacitance | CL |  | 19 |  | pF |  | 5 |

## CAD (KiCad official)

- Symbol: `7M50070012`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `7m50070012-etched.step` / `7m50070012-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `7m50070012.step` / `7m50070012.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TXC Corp datasheet](docs/7m50070012-datasheet.pdf) (11 pp, sha256 `56e9505c3f7a9afc`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/7m50070012-datasheet.pdf)