# SX25Y024000BA1T

**TKD** · Crystals · SMD2520-4P

SX25Y024000BA1T from TKD, 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 | Crystal | passive | Crystal terminal 1 of the 24.000MHz AT-cut fundamental crystal (CL 10pF, ESR 60 ohm max, drive level 100uW max), connected to pin 3 per the pin connect table. |
| 2 | GND | power_in | Ground pad, connected to case ground per the pin connect table (pins 2 and 4). |
| 3 | Crystal | passive | Crystal terminal 2 of the 24.000MHz AT-cut fundamental crystal (CL 10pF, ESR 60 ohm max, drive level 100uW max), connected to pin 1 per the pin connect table. |
| 4 | GND | power_in | Ground pad, connected to case ground per the pin connect table (pins 2 and 4). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TKD |
| 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℃±3℃ | 4 |
| Frequency Stability | TC | -10 |  | 10 | ppm | Over Operating Temp.Range(Ref.to 25℃) | 4 |
| Aging |  | -3 |  | 3 | ppm | Per Year | 4 |
| Equivalent Series Resistance | ESR |  |  | 60 | Ω |  | 4 |
| Drive Level | DL |  |  | 100 | μW |  | 4 |
| Operating Temperature |  | -20 |  | 75 | ℃ |  | 4 |
| Storage Temperature |  | -40 |  | 85 | ℃ |  | 4 |
| Insulation Resistance |  | 500 |  |  | MΩ | At DC 100V | 4 |
| Shunt Capacitance | C0 |  |  | 3 | pF |  | 4 |
| Nominal Frequency | F0 |  | 24 |  | MHz |  | 4 |
| Load Capacitance | CL |  | 10 |  | 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 |
|---|---|---|---|---|
| shell |  | nickel | 外壳 KV 合金 2 LID KV(Fe/Co/Ni) 水晶片 二氧化硅 3 Crystal blank SiO2 | 7 |

## CAD (KiCad official)

- Symbol: `SX25Y024000BA1T`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `sx25y024000ba1t-etched.step` / `sx25y024000ba1t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sx25y024000ba1t.step` / `sx25y024000ba1t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TKD datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933764604551168) (13 pp, sha256 `07bca43be305dcd1`, retrieved 2026-10-21, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sx25y024000ba1t-datasheet.pdf)