# 7M40000010

**TXC Corp** · Crystals · SMD3225-4P

7M40000010 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 1 (pin 1 marked by the dot on the lid), connected to one side of the quartz blank; 40.000000 MHz fundamental, CL 12 pF. |
| 2 | GND | power_in | Ground pin, marked GND in the internal view connection drawing. |
| 3 | XTAL2 | passive | Crystal terminal 2, connected to the other side of the quartz blank; 40.000000 MHz fundamental, CL 12 pF. |
| 4 | GND | power_in | Ground pin, marked GND in the internal view connection drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TXC Corp |
| Package | SMD3225-4P |
| 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 (at 25 ℃ ± 3 ℃) |  | -10 |  | 10 | ppm | at 25 ℃ ± 3 ℃ | 5 |
| Frequency stability |  | -10 |  | 10 | ppm | Over Operating Temp. Range (Reference 25℃) | 5 |
| Aging |  | -2 |  | 2 | ppm | 1st Year | 5 |
| Insulation Resistance |  | 500 |  |  | MΩ | at DC 100V | 5 |
| Effective Resistance | Rr |  |  | 15 | Ω |  | 5 |
| Drive level dependency | DLD2 |  |  | 6 | Ω |  | 5 |
| Drive level | DL |  |  | 100 | uW |  | 5 |
| Shunt capacitance | C0 |  |  | 2 | pF |  | 5 |
| Operating temperature |  | -30 |  | 85 | ℃ |  | 5 |
| Storage temperature range |  | -40 |  | 85 | ℃ |  | 5 |
| Nominal frequency | FL |  | 40 |  | MHz |  | 5 |
| Load capacitance | CL |  | 12 |  | pF |  | 5 |

## CAD (KiCad official)

- Symbol: `7M40000010`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `7m40000010-etched.step` / `7m40000010-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `7m40000010.step` / `7m40000010.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TXC Corp datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588936415103635456) (11 pp, sha256 `a50ad52eaaeaa43f`, retrieved 2026-10-15, 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/7m40000010-datasheet.pdf)