# RQ48000388

**TROQ** · Crystals · SMD2520-4P

RQ48000388 from TROQ, in a SMD2520-4P. 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 | XTAL1 | passive | Crystal terminal 1 (pad 1 at top-left of the 2.5x2.0 mm land pattern, chamfer-marked pad is 2), connected to one side of the quartz resonator in the drawing symbol. |
| 2 | 2 | passive | Pad 2 at top-right with the C0.3 chamfer; the drawing does not state its function (typically case/ground or N.C. on 4-pad crystals). |
| 3 | XTAL2 | passive | Crystal terminal 2 (pad 3 at bottom-right), connected to the other side of the quartz resonator in the drawing symbol. |
| 4 | 4 | passive | Pad 4 at bottom-left; the drawing does not state its function (typically case/ground or N.C. on 4-pad crystals). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TROQ |
| Package | SMD2520-4P |
| Category | Resonators/Oscillators |
| 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 Range |  | 12 |  | 54 | MHz | Mode FUND | 1 |
| Frequency Deviation |  | -30 |  | 30 | ppm | ±10ppm ~ ±30ppm depending on option | 1 |
| Frequency Temperature Characteristics |  | -30 |  | 30 | ppm | ±10ppm ~ ±30ppm depending on option | 1 |
| Operating Temperature Range |  | -40 |  | 85 | °C | or specify | 1 |
| Storage Temperature Range |  | -40 |  | 85 | °C |  | 1 |
| Aging Rate |  | -3 |  | 3 | ppm/year |  | 1 |
| Static Capacitance |  |  |  | 3 | pF | <3pf | 1 |
| Resonance Resistance 16.0-20.0MHz (first row) |  |  |  | 120 | Ω | 16.0MHz ~ 20.0MHz | 1 |
| Resonance Resistance 16.0-20.0MHz (second row) |  |  |  | 80 | Ω | 16.0MHz ~ 20.0MHz | 1 |
| Resonance Resistance 20.0-30.0MHz |  |  |  | 60 | Ω | 20.0MHz ~ 30.0MHz | 1 |
| Resonance Resistance 30.0-54.0MHz |  |  |  | 40 | Ω | 30.0MHz ~ 54.0MHz | 1 |

## CAD (KiCad official)

- Symbol: `RQ48000388`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `rq48000388-etched.step` / `rq48000388-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rq48000388.step` / `rq48000388.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TROQ datasheet](docs/rq48000388-datasheet.pdf) (1 pp, sha256 `d5172745ab3d9814`, 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-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/rq48000388-datasheet.pdf)