# FL1200138

**Diodes Incorporated** · Crystals · SMD3225-4P

FL1200138 from Diodes Incorporated, 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 | Xtal | passive | Crystal terminal connected to the quartz resonator. |
| 2 | Case | passive | Case/lid connection pad, typically connected to ground. |
| 3 | Xtal | passive | Crystal terminal connected to the quartz resonator. |
| 4 | Case | passive | Case/lid connection pad, typically connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SMD3225-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| 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 |
|---|---|---|---|---|---|---|---|
| Shunt Capacitance | C0 |  |  | 5 | pF | Characteristics at 25°C ±2°C | 2 |
| Drive Level |  |  | 10 | 100 | µW | Characteristics at 25°C ±2°C | 2 |
| Aging, first year |  | -3 |  | 3 | ppm | at 25°C, first year | 2 |
| Insulation Resistance |  | 500 |  |  | MΩ | 100 VDC | 2 |
| Storage Temperature |  | -55 |  | 125 | °C |  | 2 |
| Reflow Temperature |  |  |  | 260 | °C | 10 seconds max | 2 |

## CAD (KiCad official)

- Symbol: `FL1200138`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `fl1200138-etched.step` / `fl1200138-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fl1200138.step` / `fl1200138.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/FL1200138.pdf) (2 pp, sha256 `d3de58036cf357bf`, retrieved 2026-10-22, tier: manufacturer)
- **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/fl1200138-datasheet.pdf)