# 1XTW16367MAA

**KDS Daishinku** · Temperature Compensated Crystal Oscillators (TCXOs) · SMD3225-4P

1XTW16367MAA 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 | GND | power_in | Vcont (control voltage) on VC-TCXO DSA321SDN, GND on TCXO DSB321SDN, or ENABLE/DISABLE on stand-by DSB321SDNB (stand-by current 3μA max.). |
| 2 | GND | power_in | Ground connection. |
| 3 | OUTPUT | output | Clipped sinewave, DC-coupled output, 0.8Vp-p min. (f≦52MHz) into 10kΩ//10pF load. |
| 4 | VCC | power_in | Supply voltage, range +1.68 to +3.5V. |

## 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage Range | Vcc | 1.68 |  | 3.5 | V |  | 1 |
| Current Consumption |  |  |  | 1.5 | mA | f≦26MHz | 1 |
| Output Level |  | 0.8 |  |  | Vp-p | f≦52MHz, Clipped Sinewave/DC-coupled | 1 |
| Frequency Tolerance |  | -1.5 |  | 1.5 | ×10^-6 | After 2 reflows | 1 |
| Frequency Stability vs. Temperature |  | -0.5 |  | 0.5 | ×10^-6 | -40 to +85℃ | 1 |
| Frequency Stability vs. Supply Voltage |  | -0.2 |  | 0.2 | ×10^-6 | Vcc ±5% | 1 |
| Frequency Stability vs. Load Variation |  | -0.2 |  | 0.2 | ×10^-6 | 10kΩ//10pF±10% | 1 |
| Frequency Stability vs. Aging |  | -1 |  | 1 | ×10^-6/year |  | 1 |
| Start up Time |  |  |  | 2 | ms |  | 1 |
| Operating Temperature |  | -40 |  | 85 | ℃ | Stability temperature range | 1 |
| Phase Noise Offset 100Hz |  |  | -115 |  | dBc/Hz | f≦26MHz | 1 |
| Phase Noise Offset 1kHz |  |  | -130 |  | dBc/Hz | f≦26MHz | 1 |
| Phase Noise Offset 10kHz |  |  | -150 |  | dBc/Hz | f≦26MHz | 1 |
| Phase Noise Offset 100kHz |  |  | -155 |  | dBc/Hz | f≦26MHz | 1 |

## CAD (KiCad official)

- Symbol: `1XTW16367MAA`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `1xtw16367maa-etched.step` / `1xtw16367maa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1xtw16367maa.step` / `1xtw16367maa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KDS Daishinku datasheet](docs/1xtw16367maa-datasheet.pdf) (2 pp, sha256 `78b6d4e6bb00b387`, retrieved 2026-10-22, tier: lcsc)
- **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/1xtw16367maa-datasheet.pdf)