# TAXD12M2GLDBET8S

**Yajingxin** · Crystals · HC-49S

TAXD12M2GLDBET8S from Yajingxin, 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 | Yajingxin |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Temperature Range |  | -20 |  | 70 | ℃ |  | 2 |
| Storage Temperature Range |  | -30 |  | 85 | ℃ |  | 2 |
| Frequency Tolerance at 25℃ |  | -20 |  | 20 | ppm | at 25℃ | 2 |
| Stability over operation temperature |  | -30 |  | 30 | ppm | over operation temperature range | 2 |
| Aging |  | -5 |  | 5 | ppm/year |  | 2 |
| Shunt Capacitance | Co | 0 |  | 7 | pF |  | 2 |
| Peak/Classification Temperature (Tp) |  |  |  | 260 | ℃ | Pb-free reflow profile | 3 |
| Average Ramp-up Rate (Ts max to Tp) |  |  |  | 3 | ℃/second | Pb-free reflow profile | 3 |
| Ramp-down rate |  |  |  | 6 | ℃/second | Pb-free reflow profile | 3 |
| Time 25℃ to Peak Temperature |  |  |  | 8 | minutes | Pb-free reflow profile | 3 |
| Suggested reflow times |  |  |  | 3 | Times |  | 3 |
| Frequency (nominal) |  |  | 12 |  | MHZ |  | 2 |
| Load Capacitance | CL |  | 20 |  | pF |  | 2 |

## CAD (KiCad official)

- Symbol: `TAXD12M2GLDBET8S`
- Footprint: `Crystal:Crystal_HC49-4H_Vertical`
- 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files: `taxd12m2gldbet8s-etched.step` / `taxd12m2gldbet8s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `taxd12m2gldbet8s.step` / `taxd12m2gldbet8s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yajingxin datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904787527413760) (5 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/taxd12m2gldbet8s-datasheet.pdf)