# X3S025000DC1H-U

**HELE(Harmony Elec)** · Crystals · SMD3225-4P

X3S025000DC1H-U from HELE(Harmony Elec), 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 (chamfered pad) connected to the quartz blank in the top-view drawing, for the 25.000MHz fundamental crystal with 12.0 pF load capacitance. |
| 2 | NC | unconnected | Pad with no internal connection to the crystal blank shown in the top-view drawing. |
| 3 | XTAL2 | passive | Crystal terminal diagonal to pin 1, connected to the quartz blank in the top-view drawing, with 60 ohms max series equivalent resistance. |
| 4 | NC | unconnected | Pad with no internal connection to the crystal blank shown in the top-view drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HELE(Harmony Elec) |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal frequency |  |  | 25 |  | MHz | Fundamental mode | 3 |
| Frequency tolerance |  | -20 |  | 20 | ppm | at 25deg.C +/-3deg.C | 3 |
| Temperature drift |  | -20 |  | 20 | ppm | -20 deg.C To +70 deg.C | 3 |
| Equivalent resistance | ESR |  |  | 60 | ohms | SERIES | 3 |
| Shunt capacitance | C0 |  |  | 2 | pF |  | 3 |
| Insulation resistance |  | 500 |  |  | M ohms | at DC 100V, more than 500M ohms | 3 |
| Loading capacitance | CL |  | 12 |  | pF |  | 3 |
| Drive level |  |  | 10 | 100 | uW | 10 uW (100uW Max.) | 3 |
| Aging |  |  |  | 3 | ppm/Year | Less than +3 ppm/Year | 3 |
| Operable temperature range |  | -20 |  | 70 | deg.C |  | 3 |
| Storage temperature range |  | -40 |  | 85 | deg.C |  | 3 |
| Shock frequency variation |  | -5 |  | 5 | ppm | Dropping from 120 cm height 3 times on concrete floor | 3 |
| Shock resistance variation |  | -15 |  | 15 | % | Dropping from 120 cm height 3 times on concrete floor; or 2 ohms max. | 3 |

## CAD (KiCad official)

- Symbol: `X3S025000DC1H-U`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x3s025000dc1h-u-etched.step` / `x3s025000dc1h-u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x3s025000dc1h-u.step` / `x3s025000dc1h-u.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HELE(Harmony Elec) datasheet](docs/x3s025000dc1h-u-datasheet.pdf) (16 pp, sha256 `0d909eb6d864ede6`, retrieved 2026-10-22, tier: lcsc)
- **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/x3s025000dc1h-u-datasheet.pdf)