# Q22FA12800244

**Seiko Epson** · Crystals · SMD2016-4P

Q22FA12800244 from Seiko Epson, in a SMD2016-4P. 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 | Crystal terminal 1 (internal connection to the crystal element); the datasheet gives no further electrical limits. |
| 2 | #2 | passive | Connected to the cover (lid); the datasheet says to connect it to ground. |
| 3 | #3 | passive | Crystal terminal 3 (internal connection to the crystal element); the datasheet gives no further electrical limits. |
| 4 | #4 | passive | Connected to the cover (lid); the datasheet says to connect it to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| Package | SMD2016-4P |
| Category | Crystals/Oscillators/Resonators |
| Pins | 4 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Nominal frequency range | f_nom | 19.2 |  | 54 | MHz | Fundamental | 1 |
| Storage temperature range | T_stg | -40 |  | 125 | °C | Storage as single product. | 1 |
| Operating temperature range | T_use | -40 |  | 85 | °C | +105 °C possible, contact manufacturer | 1 |
| Level of drive (For RF Reference) | DL |  |  | 100 | µW | For RF Reference; recommended: 10 µW | 1 |
| Level of drive (For Clock) | DL |  |  | 200 | µW | For Clock; recommended: 10 µW | 1 |
| Frequency tolerance (For RF Reference) | f_tol | -10 |  | 10 | × 10-6 | +25 °C, standard; depends on nominal frequency | 1 |
| Frequency tolerance (For Clock) | f_tol | -30 |  | 30 | × 10-6 | +25 °C, standard | 1 |
| Frequency vs temperature (For RF Reference) | f_tem | -10 |  | 10 | × 10-6 | -20 °C to +75 °C, standard; depends on nominal frequency | 1 |
| Frequency vs temperature (For Clock) | f_tem | -30 |  | 30 | × 10-6 | -20 °C to +75 °C, standard | 1 |
| Load capacitance | CL | 6 |  |  | pF | 6 pF to ∞, please specify | 1 |
| Motional resistance, 19.2 MHz ≤ f_nom < 20 MHz | R1 |  |  | 150 | Ω | -20 °C to +75 °C | 1 |
| Motional resistance, 20 MHz ≤ f_nom < 24 MHz | R1 |  |  | 100 | Ω | -20 °C to +75 °C | 1 |
| Motional resistance, 24 MHz ≤ f_nom < 26 MHz | R1 |  |  | 80 | Ω | -20 °C to +75 °C | 1 |
| Motional resistance, 26 MHz ≤ f_nom ≤ 54 MHz | R1 |  |  | 60 | Ω | -20 °C to +75 °C | 1 |
| Frequency aging (For RF Reference) | f_age | -1 |  | 1 | × 10-6 / year | +25 °C, First year | 1 |
| Frequency aging (For Clock) | f_age | -5 |  | 5 | × 10-6 / year | +25 °C, First year | 1 |

## CAD (KiCad official)

- Symbol: `Q22FA12800244`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `q22fa12800244-etched.step` / `q22fa12800244-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `q22fa12800244.step` / `q22fa12800244.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](docs/q22fa12800244-datasheet.pdf) (2 pp, sha256 `a91456ca834720cd`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-5-5` (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/q22fa12800244-datasheet.pdf)