# RB040001237

**TROQ** · Crystals · HC-49S

RB040001237 from TROQ, in a HC-49S. 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 |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency Deviation |  | -30 |  | 30 | ppm | Printed as ±10ppm ~ ±30ppm; grade for this MPN not decodable from datasheet | 1 |
| Frequency Temperature Characteristics |  | -30 |  | 30 | ppm | Printed as ±10ppm ~ ±30ppm; grade for this MPN not decodable from datasheet | 1 |
| Aging Rate |  | -3 |  | 3 | ppm/year | Maximum | 1 |
| Static Capacitance |  |  |  | 7 | pF |  | 1 |
| Load Capacitance |  | 4 |  |  | pF | Series | 1 |
| Resonance Resistance |  |  |  | 120 | Ω | 3.5790MHz ~ 8.000MHz | 1 |
| Resonance Resistance |  |  |  | 60 | Ω | 8.0MHz ~ 16.0MHz | 1 |
| Resonance Resistance |  |  |  | 40 | Ω | 16.0MHz ~ 30.0MHz | 1 |
| Frequency Range |  | 3.57954 |  | 54 | MHz | Mode FUND / Third Overtone | 1 |
| Operating Temperature Range |  | -20 |  | 70 | ℃ | or specify | 1 |
| Storage Temperature Range |  | -40 |  | 85 | ℃ | Printed alternative range -40℃ ~ +85℃ | 1 |
| Storage Temperature Range |  | -40 |  | 125 | ℃ | Printed alternative range -40℃ ~ +125℃ | 1 |

## CAD (KiCad official)

- Symbol: `RB040001237`
- Footprint: `Crystal:Crystal_HC49-4H_Vertical`
- 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files: `rb040001237-etched.step` / `rb040001237-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rb040001237.step` / `rb040001237.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/8603130157016096768) (1 pp, sha256 ``, retrieved 2026-10-16, 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/rb040001237-datasheet.pdf)