# RL122881339

**TROQ** · Crystals · SMD3225-4P

RL122881339 from TROQ, 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 3.2x2.5x0.7mm 4-pad crystal, shown in the package drawing as a crystal terminal; the datasheet gives no pin function text (8.000MHz to 54.000MHz fundamental, load capacitance 8pF/10pF/12pF). |
| 2 | 2 | passive | Pad 2 of the 4-pad crystal; the datasheet gives no function text, and the drawing's symbol does not clearly show whether it is a crystal terminal or a case/NC pad. |
| 3 | 3 | passive | Pad 3 of the 4-pad crystal, shown in the package drawing as a crystal terminal; the datasheet gives no pin function text (drive level typ. 100uW). |
| 4 | 4 | passive | Pad 4 of the 4-pad crystal; the datasheet gives no function text, and the drawing's symbol does not clearly show whether it is a crystal terminal or a case/NC pad. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TROQ |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `RL122881339`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `rl122881339-etched.step` / `rl122881339-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl122881339.step` / `rl122881339.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TROQ datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600482661282422784) (1 pp, sha256 `3b3e42fd416960e4`, retrieved 2026-10-13, 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-sonnet-5-5` (text+vision), consensus `claude-opus-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/rl122881339-datasheet.pdf)