# SWXJGBCVE0-25.000000

**Starwave(思大)** · IC · HC-49S-SMD

SWXJGBCVE0-25.000000 from Starwave(思大), in a HC-49S-SMD. 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 of the two-pad SMD HC-49S package, a non-polar connection to the quartz resonator (25 MHz, 18 pF load capacitance unless otherwise specified, 1~500 µW drive level). |
| 2 | XTAL2 | passive | Crystal terminal 2 of the two-pad SMD HC-49S package, a non-polar connection to the quartz resonator (C0 7 pF max, operating temperature -40 to +85 °C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Starwave(思大) |
| Package | HC-49S-SMD |
| Category |  |
| Pins | 2 |

## 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 range |  | 3.2 |  | 90 | MHz |  | 1 |
| Frequency tolerance at 25 ºC |  | -20 |  | 20 | ppm | at 25 ºC | 1 |
| Frequency stability over operating temperature range |  | -30 |  | 30 | ppm | (-40 ~ +85 ºC) | 1 |
| Operating temperature range |  | -40 |  | 85 | ºC |  | 1 |
| Shunt capacitance (C0) | C0 |  |  | 7 | pF |  | 1 |
| Aging |  | -3 |  | 3 | ppm/year | at 25 ºC | 1 |
| Storage temperature range |  | -55 |  | 125 | ºC |  | 1 |
| Drive level |  | 1 | 100 | 500 | μW |  | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 30 | Ω | 14 ~ 30 MHz | 1 |
| Load capacitance | CL |  | 18 |  | pF | or specify | 1 |
| Nominal frequency (as in MPN) |  |  | 25 |  | MHz |  | 1 |

## CAD (KiCad official)

- Symbol: `SWXJGBCVE0-25.000000`
- Footprint: `Crystal:Crystal_SMD_HC49-SD`
- 3D model: HC-49S-SMD (KiCad packages3D, STEP)
- 3D model files: `swxjgbcve0-25-000000-etched.step` / `swxjgbcve0-25-000000-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `swxjgbcve0-25-000000.step` / `swxjgbcve0-25-000000.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Starwave(思大) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603371122373652480) (1 pp, sha256 `436cac4404e78f41`, retrieved 2026-10-21, 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/swxjgbcve0-25-000000-datasheet.pdf)