# AY25000303

**TXC Corp** · Crystals · SMD2016-4P

AY25000303 from TXC Corp, in a SMD2016-4P. 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 connected to one side of the quartz element per the Crystal Connection drawing (16~60 MHz, load capacitance 8, 10 or 12 pF, drive level max 200 uW). |
| 2 | GND | power_in | Ground connection per the Crystal Connection drawing, labeled GND. |
| 3 | XTAL2 | passive | Crystal terminal connected to the other side of the quartz element per the Crystal Connection drawing (16~60 MHz, load capacitance 8, 10 or 12 pF). |
| 4 | GND | power_in | Ground connection per the Crystal Connection drawing, labeled GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TXC Corp |
| Package | SMD2016-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Frequency (family range; MPN frequency code not decodable) | F | 16 |  | 60 | MHz |  | 1 |
| Frequency Tolerance | FT | -10 |  | 10 | ppm | @25℃±3℃ | 1 |
| Frequency Stability, Over Operating Temp. Range (Reference 25℃) | ST | -15 |  | 15 | ppm | @-40~85℃ | 1 |
| Frequency Stability, Over Operating Temp. Range (Reference 25℃) | ST | -30 |  | 30 | ppm | @-40~105℃ | 1 |
| Frequency Stability, Over Operating Temp. Range (Reference 25℃) | ST | -50 |  | 50 | ppm | @-40~125℃ | 1 |
| Operating Temperature | Topr | -40 | 25 | 125 | ℃ |  | 1 |
| Drive Level | DL |  | 100 | 200 | uW |  | 1 |
| Equivalent Series Resistance | ESR |  |  | 180 | Ohm | 16~20MHz | 1 |
| Equivalent Series Resistance | ESR |  |  | 100 | Ohm | 20~30MHz | 1 |
| Equivalent Series Resistance | ESR |  |  | 60 | Ohm | 30~40MHz | 1 |
| Equivalent Series Resistance | ESR |  |  | 40 | Ohm | 40~60MHz | 1 |
| Aging |  | -3 |  | 3 | ppm | 1st Year | 1 |
| Aging |  | -15 |  | 15 | ppm | 15th Year | 1 |

## CAD (KiCad official)

- Symbol: `AY25000303`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `ay25000303-etched.step` / `ay25000303-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ay25000303.step` / `ay25000303.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/8603382781347590144) (1 pp, sha256 `baeabd63d1b7a7b9`, retrieved 2026-10-21, tier: lcsc)
- **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/ay25000303-datasheet.pdf)