# T32251352127MDBDE2X

**Yajingxin** · Crystals · SMD3225-4P

T32251352127MDBDE2X from Yajingxin, 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 (connected to one side of the resonator) for the 13.521270 MHz fundamental-mode crystal with 10 pF load capacitance. |
| 2 | GND | power_in | Ground connection, marked GND in the top-view connection drawing (tied to the metal lid/case). |
| 3 | XTAL2 | passive | Crystal terminal 2 (connected to the other side of the resonator) for the 13.521270 MHz fundamental-mode crystal with 10 pF load capacitance. |
| 4 | GND | power_in | Ground connection, marked GND in the top-view connection drawing (tied to the metal lid/case). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yajingxin |
| Package | SMD3225-4P |
| Category | Resonators/Oscillators |
| 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℃ |  | -10 |  | 10 | ppm | at 25℃ | 2 |
| Stability over operation temperature |  | -30 |  | 30 | ppm | reference temperature 25℃ | 2 |
| Aging |  | -3 |  | 3 | ppm/year |  | 2 |
| Equivalent resistance (ESR) |  |  |  | 60 | Ω |  | 2 |
| Drive level |  |  |  | 100 | uw |  | 2 |
| Shunt capacitance (Co) | Co | 0 |  | 3 | pF |  | 2 |
| Insulation resistance |  | 500 |  |  | MΩ | at DC 100V | 2 |
| Operating temperature range |  | -30 |  | 85 | ℃ |  | 2 |
| Storage temperature range |  | -40 |  | 85 | ℃ |  | 2 |
| Peak/classification temperature (Tp) | Tp |  |  | 260 | ℃ | Pb-free reflow profile | 3 |
| Suggested reflow times |  |  |  | 3 | times | max | 3 |
| Nominal frequency |  |  | 13.5213 |  | MHZ |  | 2 |
| Load capacitance (CL) | CL |  | 10 |  | pF |  | 2 |

## CAD (KiCad official)

- Symbol: `T32251352127MDBDE2X`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `t32251352127mdbde2x-etched.step` / `t32251352127mdbde2x-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `t32251352127mdbde2x.step` / `t32251352127mdbde2x.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yajingxin datasheet](docs/t32251352127mdbde2x-datasheet.pdf) (4 pp, sha256 `50bb2c48cc154776`, 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:** 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/t32251352127mdbde2x-datasheet.pdf)