# X1E0003410273

**Seiko Epson** · Crystals · SMD3225-4P

X1E0003410273 from Seiko Epson, in a SMD3225-4P. 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 shown in the internal connection diagram (TOP VIEW); the datasheet gives no separate function, voltage limit, or current limit for this pin. |
| 2 | #2 | power_in | Connected to the metal case; the datasheet asks that it be grounded (请接地). |
| 3 | #3 | passive | Crystal terminal shown in the internal connection diagram (TOP VIEW); the datasheet gives no separate function, voltage limit, or current limit for this pin. |
| 4 | #4 | power_in | Connected to the metal case; the datasheet asks that it be grounded (请接地). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| Package | SMD3225-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Rated frequency range (fundamental) | f_nom | 12 |  | 62.4 | MHz | 基频 (fundamental) | 1 |
| Storage temperature range (bare storage) | T_stg | -40 |  | 125 | °C | 裸存 (bare) | 1 |
| Operating temperature range | T_use | -40 |  | 125 | °C |  | 1 |
| Drive level | DL |  |  | 200 | W | 推荐: 1 W ~ 100 W | 1 |
| Load capacitance | CL | 7 |  |  | pF | 可指定 (specifiable) | 1 |
| Frequency aging | f_age |  |  | 5 | ×10^-6/year | +25 °C, first year | 1 |
| Series resistance (ESR), 12.0 MHz ≤ f_nom ≤ 13.0 MHz | R1 |  |  | 120 | Ω | -40 °C ~ +125 °C, DL=100 W; band 12.0 MHz ≤ f_nom ≤ 13.0 MHz | 1 |
| Series resistance (ESR), 13.0 MHz < f_nom < 20.0 MHz | R1 |  |  | 80 | Ω | -40 °C ~ +125 °C, DL=100 W; band 13.0 MHz < f_nom < 20.0 MHz | 1 |
| Series resistance (ESR), 20.0 MHz ≤ f_nom < 25.0 MHz | R1 |  |  | 60 | Ω | -40 °C ~ +125 °C, DL=100 W; band 20.0 MHz ≤ f_nom < 25.0 MHz | 1 |
| Series resistance (ESR), 25.0 MHz ≤ f_nom ≤ 62.4 MHz | R1 |  |  | 50 | Ω | -40 °C ~ +125 °C, DL=100 W; band 25.0 MHz ≤ f_nom ≤ 62.4 MHz | 1 |

## CAD (KiCad official)

- Symbol: `X1E0003410273`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x1e0003410273-etched.step` / `x1e0003410273-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x1e0003410273.step` / `x1e0003410273.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](docs/x1e0003410273-datasheet.pdf) (2 pp, sha256 `f797845a71659a9f`, retrieved 2026-10-22, 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 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/x1e0003410273-datasheet.pdf)