# 49ASC26000202040

**JGHC** · Crystals · HC-49S

49ASC26000202040 from JGHC, 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 | JGHC |
| 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 Range |  | 3.2 |  | 90 | MHz |  | 1 |
| Frequency Tolerance (at 25 ℃) |  | -30 |  | 30 | ppm | at 25 ℃; printed as ± 30 ppm, or specify | 1 |
| Max. Aging (at 25 ℃) |  | -5 |  | 5 | ppm/year | at 25 ℃; printed as ± 5 ppm / year Max. | 1 |
| Shunt Capacitance | C0 |  |  | 7 | pF | printed as '7 pF Ma' (read as Max) | 1 |
| Drive Level |  | 1 | 100 | 500 | μW | printed as 1 ~ 500 μW (100 μW typical) | 1 |
| Operating Temperature Range |  | -20 |  | 70 | ℃ | value printed beside the 'Frequency Stability Over Operating Temperature Range' label | 1 |
| Storage Temperature Range |  | -40 |  | 85 | ℃ | value printed beside the 'Max. Aging' label in the layout; mapping uncertain | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 3.2-3.686 MHz | ESR |  |  | 200 | Ω | Fundamental, 3.2-3.686 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 3.686-5 MHz | ESR |  |  | 150 | Ω | Fundamental, 3.686-5 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 5-10 MHz | ESR |  |  | 80 | Ω | Fundamental, 5-10 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 10-14 MHz | ESR |  |  | 40 | Ω | Fundamental, 10-14 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 14-30 MHz | ESR |  |  | 30 | Ω | Fundamental, 14-30 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 27-30 MHz | ESR |  |  | 100 | Ω | Fundamental, 27-30 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 30-50 MHz | ESR |  |  | 80 | Ω | Fundamental, 30-50 MHz | 1 |
| Equivalent Series Resistance (ESR), Fundamental, 50-90 MHz | ESR |  |  | 60 | Ω | Fundamental, 50-90 MHz | 1 |

## CAD (KiCad official)

- Symbol: `49ASC26000202040`
- Footprint: `Crystal:Crystal_HC49-4H_Vertical`
- 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files: `49asc26000202040-etched.step` / `49asc26000202040-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `49asc26000202040.step` / `49asc26000202040.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JGHC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590166009815461888) (1 pp, sha256 ``, retrieved 2026-10-16, tier: lcsc)
- **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/49asc26000202040-datasheet.pdf)