# X3S024000BA1H-U

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

X3S024000BA1H-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 | #1 | passive | Crystal terminal pad #1 (chamfered pad marking pin 1) of the 24.000MHz fundamental-mode crystal, 10pF load capacitance, 60 ohms max series resistance. |
| 2 | #2 | passive | Pad #2 of the HSX321S 4-pad package; the datasheet does not state its electrical function (assumed non-signal pad, see review). |
| 3 | #3 | passive | Crystal terminal pad #3, diagonally opposite pad #1, the second terminal of the 24.000MHz crystal. |
| 4 | #4 | passive | Pad #4 of the HSX321S 4-pad package; the datasheet does not state its electrical function (assumed non-signal pad, see review). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HELE(Harmony Elec) |
| Package | SMD3225-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| 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 |  |  | 24 |  | MHz | Frequency: 24.000000MHz | 3 |
| Frequency tolerance |  | -10 |  | 10 | ppm | at 25deg.C +/-3deg.C | 3 |
| Equivalent resistance | ESR |  |  | 60 | ohms | SERIES | 3 |
| Temperature drift |  | -10 |  | 10 | ppm | -20 deg.C To +70 deg.C | 3 |
| Drive level |  | 8 | 10 | 12 | uW | 10 uW +/- 2 uW | 3 |
| Shunt capacitance | C0 |  |  | 2 | pF |  | 3 |
| Insulation resistance |  | 500 |  |  | Mohms | at DC 100V | 3 |
| Aging |  | -5 |  | 5 | ppm/Year |  | 3 |
| Shock frequency variation |  | -5 |  | 5 | ppm | Dropping from 50 cm height 3 times on firm wood | 3 |
| Shock resistance variation |  | -15 |  | 15 | % | or 2ohms max.; dropping from 50 cm height 3 times | 3 |
| Operable temperature range |  | -20 |  | 70 | deg.C |  | 3 |
| Storage temperature range |  | -40 |  | 85 | deg.C |  | 3 |

## CAD (KiCad official)

- Symbol: `X3S024000BA1H-U`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x3s024000ba1h-u-etched.step` / `x3s024000ba1h-u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x3s024000ba1h-u.step` / `x3s024000ba1h-u.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HELE(Harmony Elec) datasheet](docs/x3s024000ba1h-u-datasheet.pdf) (14 pp, sha256 `b6a6157a3a230a0d`, 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/x3s024000ba1h-u-datasheet.pdf)