# X3S027000BA1H-X

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

X3S027000BA1H-X 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 | Crystal | passive | Crystal terminal #1 of the 27 MHz quartz resonator, one of the two crystal connections; the datasheet states no electrical limits for this pin. |
| 2 | GND | power_in | Ground connection to the metal lid (GND, connection cover), which the datasheet lists as GND for pins #2 and #4. |
| 3 | Crystal | passive | Crystal terminal #3 of the 27 MHz quartz resonator, the second crystal connection; the datasheet states no electrical limits for this pin. |
| 4 | GND/Lid | power_in | Ground connection to the metal lid (GND/Lid), which the datasheet lists as GND for pins #2 and #4. |

## 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 |
|---|---|---|---|---|---|---|---|
| Frequency tolerance |  | -10 |  | 10 | ppm | at 25℃±3℃ | 4 |
| Temperature stability |  | -50 |  | 50 | ppm | -30℃ ~ +90℃ | 4 |
| Aging |  | -3 |  | 3 | ppm/Year |  | 4 |
| Insulation resistance |  | 500 |  |  | MΩ | at DC 100V | 4 |
| Storage temperature range |  | -40 |  | 90 | ℃ | Storage temperature is only for the product itself | 4 |
| Operable temperature range |  | -30 |  | 90 | ℃ |  | 4 |
| Nominal frequency (FL) | FL |  | 27 |  | MHz | Fundamental mode | 4 |
| Loading capacitance (CL) | CL |  | 10 |  | pF |  | 4 |
| Drive level (DL) | DL | 10 |  | 100 | μW |  | 4 |
| Equivalent resistance (RR) | RR |  | 60 |  | Ω | SERIES | 4 |
| Shunt capacitance (C0) | C0 |  | 2 |  | pF |  | 4 |

## CAD (KiCad official)

- Symbol: `X3S027000BA1H-X`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x3s027000ba1h-x-etched.step` / `x3s027000ba1h-x-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x3s027000ba1h-x.step` / `x3s027000ba1h-x.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HELE Harmony Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910908320468992) (11 pp, sha256 `bbfedf7dbd2facb1`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/x3s027000ba1h-x-datasheet.pdf)