# 1XXB16368MBA

**KDS Daishinku** · Temperature Compensated Crystal Oscillators (TCXOs) · SMD2520-4P

1XXB16368MBA from KDS Daishinku, 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 | GND | power_in | Vcont frequency-control input on VC-TCXO (about Vcont=+1.4V±1V at Vcc≥2.6V), GND on TCXO, or ENABLE/DISABLE stand-by control on the stand-by version (stand-by current 3μA max.). |
| 2 | GND | power_in | Ground connection. |
| 3 | Output | output | Clipped-sine, DC-coupled output, 0.8Vp-p min. into 10kΩ//10pF. |
| 4 | Vcc | power_in | Supply voltage pin, range +1.68 to +3.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KDS Daishinku |
| Package | SMD2520-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Output frequency | f |  | 16.368 |  | MHz | standard frequency 16.368MHz | 1 |
| Supply voltage range | Vcc | 1.68 |  | 3.5 | V |  | 1 |
| Current consumption |  |  |  | 1.5 | mA | f≦26MHz | 1 |
| Output voltage |  | 0.8 |  |  | Vp-p | f≦52MHz, clipped sine/DC-coupled | 1 |
| Frequency tolerance at room temperature |  | -1.5 |  | 1.5 | ×10^-6 | After 2 reflows | 1 |
| Frequency temperature characteristic |  | -2.5 |  | 2.5 | ×10^-6 | -30～+85℃ (option -40～+85℃); ±1.0 grade also listed | 1 |
| Frequency supply voltage characteristic |  | -0.2 |  | 0.2 | ×10^-6 | Vcc ±5% | 1 |
| Frequency load characteristic |  | -0.2 |  | 0.2 | ×10^-6 | 10kΩ//10pF±10% | 1 |
| Long-term frequency change |  | -1 |  | 1 | ×10^-6/year |  | 1 |
| Start-up time |  |  |  | 2 | ms |  | 1 |
| Operating temperature range |  | -30 |  | 85 | ℃ | option -40～+85℃ | 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: `1XXB16368MBA`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `1xxb16368mba-etched.step` / `1xxb16368mba-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1xxb16368mba.step` / `1xxb16368mba.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KDS Daishinku datasheet](docs/1xxb16368mba-datasheet.pdf) (2 pp, sha256 `e00fe37d5c78beb6`, 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), 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/1xxb16368mba-datasheet.pdf)