# B08000J065

**ECEC(ZheJiang E ast Crystal Elec)** · Crystals · HC-49S

B08000J065 from ECEC(ZheJiang E ast Crystal Elec), 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 | ECEC(ZheJiang E ast Crystal Elec) |
| 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 | △f | -20 |  | 20 | ppm |  | 3 |
| Equivalent resistance | Rr |  |  | 40 | Ω | Series; lead to lead, case to lead | 3 |
| Temperature drift | TC | -20 |  | 20 | ppm | -20℃+70℃ | 3 |
| Shunt capacitance | C0 |  |  | 7 | PF |  | 3 |
| Insulation resistance |  | 500 |  |  | MΩ | DC 100V±15V | 3 |
| Operating temperature range | T0 | -20 |  | 70 | ℃ |  | 3 |
| Storage temperature range | Ts | -50 |  | 125 | ℃ |  | 3 |
| Drive level | DL |  | 100 | 500 | μw |  | 3 |
| Load capacitance | CL |  | 20 |  | PF |  | 3 |
| Frequency (nominal) | F0 |  | 8 |  | MHz |  | 1 |

## CAD (KiCad official)

- Symbol: `B08000J065`
- Footprint: `Crystal:Crystal_HC49-4H_Vertical`
- 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files: `b08000j065-etched.step` / `b08000j065-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `b08000j065.step` / `b08000j065.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ECEC(ZheJiang E ast Crystal Elec) datasheet](docs/b08000j065-datasheet.pdf) (9 pp, sha256 ``, retrieved 2026-10-21, 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/b08000j065-datasheet.pdf)