The part number **C1206Y393DGGACTU** refers to a specific Surface Mount (SMD) Multilayer Ceramic Capacitor (MLCC) manufactured by **KEMET**. This specific component belongs to their "Floating Electrode" (FE-CAP) series, designed for high-reliability and fail-safe applications. --- ## 1. Technical Specifications Below are the electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Capacitance** | 39,000 pF (0.039 µF) | | **Tolerance** | ±0.5% (D) | | **Voltage Rating (DC)** | 2000 V (2 kV) | | **Dielectric Material** | C0G (NP0) - Ultra-Stable | | **Case Size (Inch/Metric)** | 1206 / 3216 | | **Operating Temperature** | -55°C to +125°C | | **Termination** | 100% Matte Tin (Sn) over Nickel (Ni) | --- ## 2. Part Number Breakdown Understanding the KEMET nomenclature for this specific part: 1. **C**: Ceramic Capacitor. 2. **1206**: Case size (approx. 0.12" x 0.06"). 3. **Y**: Floating Electrode (High Voltage, Fail-Safe design). 4. **393**: Capacitance code (39 followed by 3 zeros = 39,000 pF). 5. **D**: Capacitance tolerance (±0.5%). 6. **G**: Voltage rating (2000V). 7. **G**: Dielectric type (C0G/NP0). 8. **A**: Packaging/Grade (Standard). 9. **C**: Termination finish (Standard Tin). 10. **TU**: 7" Plastic Embossed Tape & Reel packaging. --- ## 3. Key Electronic Features ### Floating Electrode (FE-CAP) Design The "Y" in the part number indicates a **Floating Electrode** structure. This design features internal electrodes that are not connected to the external terminations. - **Benefit:** If the capacitor cracks due to mechanical stress or thermal shock, it is significantly less likely to form a short circuit. Instead, it fails as an open circuit or with a minor loss of capacitance. ### C0G (NP0) Dielectric This is a Class I material, meaning it is **ultra-stable**: - **Zero Drift:** Capacitance does not change significantly with time or voltage. - **Temperature Stability:** The capacitance remains constant across the entire operating temperature range. - **Low Loss:** It has extremely low dissipation factor (high Q), making it ideal for high-frequency applications. ### High Voltage Capability Rated at **2000V**, this capacitor is built for power electronics, high-voltage coupling, and surge protection where standard 50V or 100V capacitors would fail. --- ## 4. Typical Applications * **Power Supplies:** Input filters and snubbers in high-voltage DC-DC converters. * **Inverters:** Used in solar or automotive power systems. * **High-Frequency Circuits:** Resonant circuits where stability and low loss are critical. * **Safety Critical Systems:** Automotive or industrial sensors where a short-circuit failure could lead to catastrophic system damage.