# R925000405

**TROQ** · Crystals · SMD2016-4P

R925000405 from TROQ, in a SMD2016-4P. 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 of the 2.0x1.6x0.5mm 4-pad package, shown connected to the crystal element in the pin diagram. |
| 2 | XTAL2 | passive | Crystal terminal 2 of the 2.0x1.6x0.5mm 4-pad package, shown connected to the crystal element in the pin diagram. |
| 3 | NC | unconnected | Pad 3 is not connected to the crystal element in the pin diagram; the datasheet gives no function for it. |
| 4 | NC | unconnected | Pad 4 is not connected to the crystal element in the pin diagram; the datasheet gives no function for it. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TROQ |
| Package | SMD2016-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Aging Rate |  | -3 |  | 3 | ppm/year | Aging Rate, per year | 1 |
| Operating Temperature Range |  | -40 |  | 85 | ℃ | or specify | 1 |
| Storage temperature Range |  | -40 |  | 85 | ℃ |  | 1 |
| Static Capacitance |  |  |  | 3 | pF |  | 1 |
| Resonance Resistance |  |  |  | 120 | Ω | Frequency range 16.0MHz ~ 20.0MHz | 1 |
| Resonance Resistance |  |  |  | 60 | Ω | Frequency range 16.00MHz ~ 24.0MHz | 1 |
| Resonance Resistance |  |  |  | 45 | Ω | Frequency range 24.0MHz ~ 40.0MHz | 1 |
| Resonance Resistance |  |  |  | 35 | Ω | Frequency range 40.0MHz ~ 96.0MHz | 1 |

## CAD (KiCad official)

- Symbol: `R925000405`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `r925000405-etched.step` / `r925000405-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `r925000405.step` / `r925000405.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/8603130054142943232) (1 pp, sha256 `41f1ba2ca6a04e0b`, retrieved 2026-10-21, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/r925000405-datasheet.pdf)