# 1N212000BB0AS

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

1N212000BB0AS 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 | #1 | passive | Pin #1 is at the bottom-left position in the top view, and the datasheet gives no function name or electrical limit for it. |
| 2 | #2 | passive | Pin #2 is at the bottom-right position in the top view; the datasheet states both that it is not connected and that it must be connected with GND, so its function is unresolved. |
| 3 | #3 | passive | Pin #3 is at the top-right position in the top view, and the datasheet gives no function name or electrical limit for it. |
| 4 | #4 | passive | Pin #4 is at the top-left position in the top view; the datasheet states both that it is not connected and that it must be connected with GND, so its function is unresolved. |

## 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 at 25 deg.C |  | -30 |  | 30 | × 10-6 | at 25 deg.C +/- 3 deg.C | 1 |
| Frequency characteristics over temperature (ref. +25 deg.C) |  | -30 |  | 30 | × 10-6 | -20 deg.C to +75 deg.C, ref. +25 deg.C | 1 |
| Series resistance |  |  |  | 80 | ohms | CL = SERIES | 1 |
| Operating temperature range |  | -20 |  | 75 | deg.C |  | 1 |
| Storage temperature range |  | -30 |  | 85 | deg.C |  | 1 |
| Shunt capacitance (C0) | C0 |  |  | 2 | pF |  | 1 |
| Insulation resistance |  | 500 |  |  | Mohms | at 100V DC | 1 |
| Nominal frequency |  |  | 12 |  | MHz |  | 1 |
| Load capacitance (CL) | CL |  | 20 |  | pF |  | 1 |
| Drive level |  |  | 10 |  | uW | +/- 2 uW | 1 |

## CAD (KiCad official)

- Symbol: `1N212000BB0AS`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `1n212000bb0as-etched.step` / `1n212000bb0as-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1n212000bb0as.step` / `1n212000bb0as.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KDS Daishinku datasheet](docs/1n212000bb0as-datasheet.pdf) (1 pp, sha256 `c9817453b23b5c52`, retrieved 2026-10-30, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/1n212000bb0as-datasheet.pdf)