# K3A1352A1210

**KYX** · Crystals · SMD3225-4P

K3A1352A1210 from KYX, 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 for the 13.52127 MHz fundamental-mode resonator (CL 12 pF, ESR 80 Ω max, drive level 100 μW); marked with the chamfered pad on the drawing. |
| 2 | NC | unconnected | Pad #2 on the SMD 3.2x2.5 mm package; the drawing does not show it connected to the crystal element. |
| 3 | XTAL2 | passive | Second crystal terminal for the 13.52127 MHz resonator, diagonally opposite pad 1 and shown connected to the element in the top view. |
| 4 | NC | unconnected | Pad #4 on the SMD 3.2x2.5 mm package; the drawing does not show it connected to the crystal element. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KYX |
| 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 |  | -10 |  | 10 | ppm | at 25℃±3℃ | 2 |
| Frequency Characteristics Over Temperature |  | -20 |  | 20 | ppm | -40℃～+85℃ | 2 |
| Equivalent Series Resistance |  |  |  | 80 | Ω |  | 2 |
| Shunt Capacitance | C0 |  |  | 5 | pF |  | 2 |
| Insulation Resistance |  | 500 |  |  | MΩ | at 100 V | 2 |
| Aging |  | -3 |  | 3 | ppm/Year |  | 2 |
| Operating Temperature Range |  | -40 |  | 85 | ℃ |  | 2 |
| Storage Temperature Range |  | -40 |  | 85 | ℃ |  | 2 |
| Frequency (nominal) |  |  | 13.5213 |  | MHz |  | 2 |
| Load Capacitance | CL |  | 12 |  | pF |  | 2 |
| Frequency Change After Vibration | FL | -10 |  | 10 | ppm | After vibration test | 4 |
| Equivalent Series Resistance Change After Vibration | Rr | -10 |  | 10 | Ω | After vibration test | 4 |
| Frequency Change After Drop | FL | -10 |  | 10 | ppm | After drop test, 70 cm, 3 times | 4 |
| Equivalent Series Resistance Change After Drop | Rr | -10 |  | 10 | Ω | After drop test, 70 cm, 3 times | 4 |
| Frequency Change After Shock | FL | -10 |  | 10 | ppm | After shock test, 981 m/s², 6 ms | 4 |
| Equivalent Series Resistance Change After Shock | Rr | -10 |  | 10 | Ω | After shock test, 981 m/s², 6 ms | 4 |

## CAD (KiCad official)

- Symbol: `K3A1352A1210`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `k3a1352a1210-etched.step` / `k3a1352a1210-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k3a1352a1210.step` / `k3a1352a1210.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KYX datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603092633652633600) (6 pp, sha256 `37a731e8ca43a605`, 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/k3a1352a1210-datasheet.pdf)