# 6BS13521F10UCG

**SJK(SHENZHEN CRYSTAL TECH)** · Crystals · HC-49S

6BS13521F10UCG from SJK(SHENZHEN CRYSTAL TECH), 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 | SJK(SHENZHEN CRYSTAL TECH) |
| 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 tolerance |  | -20 |  | 20 | ppm | at 25°C | 2 |
| Frequency stability over operating temperature |  | -30 |  | 30 | ppm | over operating temperature range | 2 |
| Aging (1st year) |  | -3 |  | 3 | ppm/year | 1st year (max) at 25°C | 2 |
| Equivalent series resistance (ESR) | ESR |  |  | 40 | Ω |  | 2 |
| Shunt capacitance | C0 |  |  | 3 | pF |  | 2 |
| Operating temperature range |  | -40 |  | 85 | °C |  | 2 |
| Storage temperature range |  | -40 |  | 125 | °C |  | 2 |
| Nominal output frequency |  |  | 13.5213 |  | MHz |  | 2 |
| Load capacitance (CL) | CL |  | 10 |  | pF |  | 2 |
| Driver level (drive level) |  |  | 100 |  | µW |  | 2 |

## CAD (KiCad official)

- Symbol: `6BS13521F10UCG`
- Footprint: `Crystal:Crystal_HC49-4H_Vertical`
- 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files: `6bs13521f10ucg-etched.step` / `6bs13521f10ucg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `6bs13521f10ucg.step` / `6bs13521f10ucg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SJK(SHENZHEN CRYSTAL TECH) datasheet](docs/6bs13521f10ucg-datasheet.pdf) (4 pp, sha256 ``, retrieved 2026-10-30, 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/6bs13521f10ucg-datasheet.pdf)