# X1E0000210613

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

X1E0000210613 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 | Pad #1 of the TSX-3225 3.2 × 2.5 mm, 4-pad outline shown in the datasheet top view; the extracted text does not state its function explicitly. |
| 2 | #2 | passive | Pad #2 is one of the two pads (with #4) that the datasheet footnote singles out, but the footnote text is garbled so its exact function cannot be confirmed from this extraction. |
| 3 | #3 | passive | Pad #3 of the TSX-3225 outline shown in the datasheet top view; the extracted text does not state its function explicitly. |
| 4 | #4 | passive | Pad #4 is one of the two pads (with #2) that the datasheet footnote singles out, but the footnote text is garbled so its exact function cannot be confirmed from this extraction. |

## 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 |
|---|---|---|---|---|---|---|---|
| Frequency tolerance (standard) | f_tol | -50 |  | 50 | × 10-6 |  | 1 |
| Frequency tolerance (option, ±15 to ±50 ×10-6 range) | f_tol | -10 |  | 10 | × 10-6 | +25 °C | 1 |
| Frequency-temperature stability | f_tem | -30 |  | 30 | × 10-6 | -20 °C ~ +70 °C | 1 |
| Frequency-temperature stability | f_tem | -10 |  | 10 | × 10-6 | -20 °C ~ +75 °C | 1 |
| Equivalent series resistance ESR (TSX-3225, 16.0 MHz ≤ f_nom < 21.0 MHz) | R1 |  |  | 60 | Ω | -40 °C ~ +85 °C, DL = 100 µW | 1 |
| Equivalent series resistance ESR (TSX-3225, 21.0 MHz ≤ f_nom ≤ 48.0 MHz) | R1 |  |  | 40 | Ω | -40 °C ~ +85 °C, DL = 100 µW | 1 |
| Aging | f_age | -5 |  | 5 | × 10-6 / year | +25 °C | 1 |
| Aging (footnote *2 case) | f_age | -1 |  | 1 | × 10-6 / year | +25 °C | 1 |
| Load capacitance | CL | 7 |  |  | pF |  | 1 |
| Drive level (recommended range) | DL | 1 |  | 100 | µW |  | 1 |
| Drive level (maximum) | DL |  |  | 200 | µW |  | 1 |
| Operating temperature range | T_use | -40 |  | 85 | °C |  | 1 |
| Storage temperature range | T_stg | -40 |  | 125 | °C |  | 1 |
| Nominal frequency range (TSX-3225 column) | f_nom | 16 |  | 48 | MHz |  | 1 |

## CAD (KiCad official)

- Symbol: `X1E0000210613`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `x1e0000210613-etched.step` / `x1e0000210613-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `x1e0000210613.step` / `x1e0000210613.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893142414606336) (2 pp, sha256 `4e9c0baa33e30d2d`, retrieved 2026-10-15, 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/x1e0000210613-datasheet.pdf)