# CS325-44.000MABJ-UT

**CITIZEN** · Crystals · SMD3225-4P

CS325-44.000MABJ-UT from CITIZEN, 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 | Crystal terminal connected through the internal crystal element to terminal #3 in the Internal connection diagram (top view). |
| 2 | #2 | passive | Pad shown in the Internal connection diagram without a stated function; the datasheet does not define it as a crystal terminal. |
| 3 | #3 | passive | Crystal terminal connected through the internal crystal element to terminal #1 in the Internal connection diagram (top view). |
| 4 | #4 | passive | Pad shown in the Internal connection diagram without a stated function; the datasheet does not define it as a crystal terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CITIZEN |
| Package | SMD3225-4P |
| Category | Resonators/Oscillators |
| 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 | Δf/f0 | -30 |  | 30 | ppm | at 25°C (25℃±3℃) | 1 |
| Frequency Tolerance over Operating Temperature Range | Δf/f0 | -30 |  | 30 | ppm | -10℃ to +60℃ (as extracted; assignment uncertain) | 1 |
| Operating Temperature Range | TOPR | -40 |  | 85 | °C |  | 1 |
| Storage Temperature Range | TSTR | -55 |  | 125 | °C |  | 1 |
| Motional (series) resistance | R1 |  |  | 50 | Ω | 30.0MHz≦f0＜54.0MHz | 1 |
| Load capacitance | CL |  | 16 |  | pF | 16.0pF, 18.0pF listed; "Need to specify your requirement" | 1 |
| Shunt capacitance | C0 |  |  | 5 | pF |  | 1 |
| Level of drive | DL |  | 10 | 100 | μW | 10μW (100μW Max.) | 1 |
| Insulation Resistance | IR | 500 |  |  | MΩ | DC100V±15V | 1 |
| Aging (first year) | Δf/f0 |  |  | 5 | ppm | first year, ±5ppm Max., 25℃±3℃ | 1 |

## CAD (KiCad official)

- Symbol: `CS325-44.000MABJ-UT`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `cs325-44-000mabj-ut-etched.step` / `cs325-44-000mabj-ut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cs325-44-000mabj-ut.step` / `cs325-44-000mabj-ut.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CITIZEN datasheet](docs/cs325-44-000mabj-ut-datasheet.pdf) (1 pp, sha256 `db2ed8ec92c20b5b`, retrieved 2026-11-02, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cs325-44-000mabj-ut-datasheet.pdf)