# Q22FA12800489

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

Q22FA12800489 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 | Pin #1 is one of the two crystal terminals in the internal connection diagram; the datasheet gives no pin name or electrical limit for it. |
| 2 | #2 | power_in | Pin #2 is connected to the metal cover and the datasheet instructs it to be connected to ground. |
| 3 | #3 | passive | Pin #3 is one of the two crystal terminals in the internal connection diagram; the datasheet gives no pin name or electrical limit for it. |
| 4 | #4 | power_in | Pin #4 is connected to the metal cover and the datasheet instructs it to be connected 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 |
|---|---|---|---|---|---|---|---|
| Storage temperature range | T_stg | -40 |  | 125 | °C | Storage as single product | 1 |
| Operating temperature range | T_use | -40 |  | 85 | °C | Standard range; datasheet notes +105 °C (contact Epson for +85 °C < T_use) | 1 |
| Nominal frequency range | f_nom | 19.2 |  | 54 | MHz | Fundamental | 1 |
| Level of drive | DL |  |  | 100 | µW |  | 1 |
| Level of drive | DL |  |  | 200 | µW |  | 1 |
| Level of drive (recommended) | DL |  | 10 |  | µW | Recommended | 1 |
| Frequency tolerance (standard) | f_tol | -10 |  | 10 | × 10-6 | +25 °C; please contact us for frequency-dependent availability | 1 |
| Frequency tolerance (standard) | f_tol | -30 |  | 30 | × 10-6 | +25 °C; please contact us for requirements not listed | 1 |
| Frequency versus temperature characteristics (standard) | f_tem | -10 |  | 10 | × 10-6 | -20 °C to +75 °C | 1 |
| Frequency versus temperature characteristics (standard) | f_tem | -30 |  | 30 | × 10-6 | -20 °C to +75 °C | 1 |
| Load capacitance | CL | 6 |  |  | pF | 6 pF to ∞; please specify | 1 |
| Frequency aging | f_age | -1 |  | 1 | × 10-6 / year | +25 °C, first year | 1 |
| Frequency aging | f_age | -5 |  | 5 | × 10-6 / year | +25 °C, first year | 1 |
| Motional resistance (ESR) | R1 |  |  | 150 | Ω | 19.2 MHz ≤ f_nom < 20 MHz; -20 °C to +75 °C | 1 |
| Motional resistance (ESR) | R1 |  |  | 100 | Ω | 20 MHz ≤ f_nom < 24 MHz; -20 °C to +75 °C | 1 |
| Motional resistance (ESR) | R1 |  |  | 80 | Ω | 24 MHz ≤ f_nom < 26 MHz; -20 °C to +75 °C | 1 |
| Motional resistance (ESR) | R1 |  |  | 60 | Ω | 26 MHz ≤ f_nom ≤ 54 MHz; -20 °C to +75 °C | 1 |

## CAD (KiCad official)

- Symbol: `Q22FA12800489`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `q22fa12800489-etched.step` / `q22fa12800489-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `q22fa12800489.step` / `q22fa12800489.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](docs/q22fa12800489-datasheet.pdf) (2 pp, sha256 `a91456ca834720cd`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/q22fa12800489-datasheet.pdf)