# X2B02863ADC1H-W

**HELE(Harmony Elec)** · Crystals · SMD2520-4P

X2B02863ADC1H-W from HELE(Harmony Elec), 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 | XTAL1 | passive | Crystal terminal 1 (28.63636MHz fundamental, CL 12.0 pF, ESR 80 ohms max, drive level 10 uW typ and 100 uW max), shown in the top-view drawing as connected to one side of the quartz blank. |
| 2 | NC | unconnected | Corner pad that the top-view drawing shows with no connection to the quartz blank, so it is treated as a no-connect. |
| 3 | XTAL2 | passive | Crystal terminal 2 (28.63636MHz fundamental, CL 12.0 pF, ESR 80 ohms max, drive level 10 uW typ and 100 uW max), shown in the top-view drawing as connected to the opposite side of the quartz blank. |
| 4 | NC | unconnected | Corner pad that the top-view drawing shows with no connection to the quartz blank, so it is treated as a no-connect. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HELE(Harmony Elec) |
| 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 |  |  | 28.6364 |  | MHz | Nominal frequency | 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 |  |  |  | 80 | ohms | SERIES | 3 |
| Shunt capacitance |  |  |  | 2 | pF |  | 3 |
| Loading capacitance | CL |  | 12 |  | pF |  | 3 |
| Drive level |  |  | 10 | 100 | μW |  | 3 |
| Insulation resistance |  | 500 |  |  | M ohms | at DC 100V | 3 |
| Aging |  | -3 |  | 3 | ppm/Year | Less than +/- 3 ppm/Year | 3 |
| Operable temperature range |  | -20 |  | 70 | deg.C |  | 3 |
| Storage temperature range |  | -40 |  | 125 | 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 2ohms max. | 3 |

## CAD (KiCad official)

- Symbol: `X2B02863ADC1H-W`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `x2b02863adc1h-w-etched.step` / `x2b02863adc1h-w-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x2b02863adc1h-w.step` / `x2b02863adc1h-w.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HELE(Harmony Elec) datasheet](docs/x2b02863adc1h-w-datasheet.pdf) (16 pp, sha256 `bd6da4cdca5f165c`, 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/x2b02863adc1h-w-datasheet.pdf)