# X2B026000B91H-HV

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

X2B026000B91H-HV 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 | Crystal | passive | Pin 1 is one of the two crystal terminals, shown as 'Crystal' in the pin connection diagram, and the datasheet states no voltage or current limit for it. |
| 2 | GND | power_in | Pin 2 is a ground pad, labelled 'GND (connection Cover)', which connects internally to the lid, and the datasheet states no electrical limit for it. |
| 3 | Crystal | passive | Pin 3 is the second crystal terminal, shown as 'Crystal' in the pin connection diagram, and the datasheet states no voltage or current limit for it. |
| 4 | GND/Lid | power_in | Pin 4 is a ground pad, labelled 'GND/Lid' and 'GND (connection Cover)', which connects internally to the lid, and the datasheet states no electrical limit for it. |

## 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 tolerance |  | -10 |  | 10 | ppm | at 25℃±3℃ | 4 |
| Temperature stability |  | -15 |  | 15 | ppm | -20℃ ~ +70℃ | 4 |
| Insulation resistance |  | 500 |  |  | MΩ | at DC 100V | 4 |
| Aging |  | -3 |  | 3 | ppm/Year |  | 4 |
| Operable temperature range |  | -20 |  | 70 | ℃ |  | 4 |
| Storage temperature range |  | -40 |  | 85 | ℃ |  | 4 |
| Frequency (nominal) | FL |  | 26 |  | MHz |  | 4 |
| Equivalent resistance | RR |  |  | 60 | Ω | SERIES | 4 |
| Loading capacitance | CL |  | 9 |  | pF |  | 4 |
| Drive level | DL |  |  | 100 | μW |  | 4 |
| Shunt capacitance | C0 |  | 2 |  | pF |  | 4 |

## CAD (KiCad official)

- Symbol: `X2B026000B91H-HV`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `x2b026000b91h-hv-etched.step` / `x2b026000b91h-hv-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x2b026000b91h-hv.step` / `x2b026000b91h-hv.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/8588911409668874241) (11 pp, sha256 `19abd1d2bf5fcd96`, retrieved 2026-10-16, 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/x2b026000b91h-hv-datasheet.pdf)