# RC245761119

**TROQ** · Crystals · HC-49S-SMD

RC245761119 from TROQ, 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 | 1 | passive | Terminal 1 of a two-terminal crystal; either orientation. |
| 2 | 2 | passive | Terminal 2 of a two-terminal crystal; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TROQ |
| Package | HC-49S-SMD |
| Category | Crystals, Oscillators, Resonators |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Temperature Range |  | -20 |  | 70 | ℃ | or specify (printed) | 1 |
| Aging Rate |  | -3 |  | 3 | ppm/year | Maximum (printed as ±3ppm / year) | 1 |
| Static Capacitance |  |  |  | 7 | pF |  | 1 |
| Load Capacitance |  | 4 |  |  | pF | Series (printed as 4PF ~ ∞(Series)) | 1 |

## CAD (KiCad official)

- Symbol: `RC245761119`
- Footprint: `Crystal:Crystal_SMD_HC49-SD`
- 3D model: HC-49S-SMD (KiCad packages3D, STEP)
- 3D model files: `rc245761119-etched.step` / `rc245761119-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rc245761119.step` / `rc245761119.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TROQ datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602974355571814400) (1 pp, sha256 ``, retrieved 2026-10-15, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `crystal numbering` (convention), consensus `off` (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/rc245761119-datasheet.pdf)