# DSX321G 12MHz

**KDS Daishinku** · Crystals · SMD3225-4P

DSX321G 12MHz from KDS Daishinku, 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 | Crystal terminal (#1) | passive | Crystal terminal #1 of the resonator; the datasheet identifies #1 and #3 as the crystal terminals and gives no separate electrical limit for this pin. |
| 2 | Open (#2) | unconnected | Pin #2 is open (not connected) per the datasheet and should be left unconnected. |
| 3 | Crystal terminal (#3) | passive | Crystal terminal #3 of the resonator; the datasheet identifies #1 and #3 as the crystal terminals and gives no separate electrical limit for this pin. |
| 4 | Open (#4) | unconnected | Pin #4 is open (not connected) per the datasheet and should be left unconnected. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KDS Daishinku |
| 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 |  | -30 |  | 30 | ×10^-6 | at 25℃ | 1 |
| Frequency temperature characteristic |  | -100 |  | 100 | ×10^-6 | -40 to +125℃ (Ref. to 25℃) | 1 |
| Series resistance |  |  |  | 120 | Ω | 12-27MHz, Fundamental | 1 |
| Drive level |  |  | 10 | 200 | μW |  | 1 |
| Storage temperature range |  | -40 |  | 150 | ℃ |  | 1 |
| Nominal frequency |  |  | 12 |  | MHz | Fundamental | 1 |

## CAD (KiCad official)

- Symbol: `DSX321G 12MHz`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `dsx321g-12mhz-etched.step` / `dsx321g-12mhz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dsx321g-12mhz.step` / `dsx321g-12mhz.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KDS Daishinku datasheet](docs/dsx321g-12mhz-datasheet.pdf) (1 pp, sha256 `142b15a9427f3961`, 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:** `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/dsx321g-12mhz-datasheet.pdf)