# CM4024M00008001

**huaxindianzi** · Crystals · SMD2520-4P

CM4024M00008001 from huaxindianzi, 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 for the 24.000 MHz fundamental AT-cut resonator (8 pF load capacitance), connected to the crystal element as shown in the top-view crystal connection. |
| 2 | GND | power_in | Ground pin, tied to the lid/case per the top-view crystal connection drawing. |
| 3 | XTAL2 | passive | Second crystal terminal for the 24.000 MHz resonator, connected to the crystal element as shown in the top-view crystal connection. |
| 4 | GND | power_in | Ground pin, tied to the lid/case per the top-view crystal connection drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | huaxindianzi |
| 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 |  | -10 |  | 10 | ppm | At 25℃ | 4 |
| Temperature Frequency Stability |  | -25 |  | 25 | ppm |  | 4 |
| Operating Temperature | TC | -30 |  | 85 | ℃ |  | 4 |
| Drive Level | DL | 1 | 350 | 350 | μW |  | 4 |
| Resonant resistance | RR |  |  | 60 | Ω |  | 4 |
| Direct capacitance | C0 |  |  | 3 | pF |  | 4 |
| Insulation resistance | IR | 500 |  |  | MΩ | At DC 100V | 4 |
| Parasitic attenuation | SPDB |  |  | -3 | dB | -1000ppm～6500ppm | 4 |
| Aging rate |  | -2 |  | 2 | ppm | 1st year max | 4 |
| Storage temperature range |  | -55 |  | 125 | ℃ |  | 4 |
| Nominal Frequency | F0 |  | 24 |  | MHz |  | 4 |
| Load Capacitance | CL |  | 8 |  | pF |  | 4 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | gold | Pin Au Conducting rein Ag+硅树脂 | 6 |

## CAD (KiCad official)

- Symbol: `CM4024M00008001`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `cm4024m00008001-etched.step` / `cm4024m00008001-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cm4024m00008001.step` / `cm4024m00008001.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [huaxindianzi datasheet](docs/cm4024m00008001-datasheet.pdf) (10 pp, sha256 `b9701c9cbadf698b`, retrieved 2026-10-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/cm4024m00008001-datasheet.pdf)