# SWXJGBCVH0-4.545000

**Starwave(思大)** · IC · HC-49S-SMD

SWXJGBCVH0-4.545000 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 | First crystal terminal of the two-pad HC-49S SMD unit (3.2~90 MHz, 18 pF load capacitance unless specified, 1~500 µW drive level). |
| 2 | XTAL2 | passive | Second crystal terminal of the two-pad HC-49S SMD unit (3.2~90 MHz, 18 pF load capacitance unless specified, 1~500 µW drive level). |

## 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 |
|---|---|---|---|---|---|---|---|
| ESR (fundamental, 3.686 ~ 5 MHz band) | ESR |  |  | 100 | Ω | Fundamental, 3.686 ~ 5 MHz | 1 |
| Shunt capacitance | C0 |  |  | 7 | pF |  | 1 |
| Frequency tolerance at 25 ºC |  | -20 |  | 20 | ppm | At 25 ºC, or specify | 1 |
| Frequency stability over operating temperature range |  | -30 |  | 30 | ppm | -40 ~ +85 ºC, or specify | 1 |
| Aging |  | -3 |  | 3 | ppm / year | At 25 ºC, Max. | 1 |
| Drive level |  | 1 | 100 | 500 | μW | Printed as 1 ~ 500 μW (100 μW typical) | 1 |
| Load capacitance |  |  | 18 |  | pF | 18 pF, or specify | 1 |
| Frequency range |  | 3.2 |  | 90 | MHz | Fundamental and 3rd overtone series XJ | 1 |
| Operating temperature range |  | -40 |  | 85 | ºC |  | 1 |
| Storage temperature range |  | -55 |  | 125 | ºC |  | 1 |

## CAD (KiCad official)

- Symbol: `SWXJGBCVH0-4.545000`
- Footprint: `Crystal:Crystal_SMD_HC49-SD`
- 3D model: HC-49S-SMD (KiCad packages3D, STEP)
- 3D model files: `swxjgbcvh0-4-545000-etched.step` / `swxjgbcvh0-4-545000-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `swxjgbcvh0-4-545000.step` / `swxjgbcvh0-4-545000.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/8603371077900906496) (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/swxjgbcvh0-4-545000-datasheet.pdf)