The part number **NCD682D2KVY5PE2LSTR25LSF** refers to a high-voltage ceramic disc capacitor. These components are commonly used for decoupling, bypass, and snubbing applications in high-voltage circuits. ### Component Specification Breakdown The alphanumeric string describes the physical and electrical characteristics of the capacitor: | Specification | Value/Description | | :--- | :--- | | **Capacitance** | 6800 pF (6.8 nF) | | **Voltage Rating** | 2000V (2kV) DC | | **Dielectric Material** | Y5P (Class II Ceramic) | | **Tolerance** | ±0.5pF or ±10% (Specific to series) | | **Form Factor** | Radial Leaded Disc | | **Packaging** | Long Straight Lead / Tape and Reel (indicated by STR) | --- ### Detailed Technical Analysis #### 1. Dielectric (Y5P) The **Y5P** code identifies the temperature coefficient of the ceramic material. * **Operating Temperature Range:** -30°C to +85°C. * **Capacitance Change:** The capacitance varies by approximately ±10% over its temperature range. * **Stability:** This is a Class II material, meaning it offers higher volumetric efficiency than Class I (like C0G) but is less stable over temperature and voltage fluctuations. #### 2. Voltage Rating (2kV) The **2kV** rating signifies that this capacitor is designed for high-stress environments. It is often used in: * Power supply primary-side protection. * CRT monitors (Legacy hardware). * Lighting ballasts. * Surge protection circuits. #### 3. Lead Configuration (25LSF) The suffix often denotes mechanical specifications: * **Lead Spacing:** The distance between the two leads (e.g., 5mm, 7.5mm, or 10mm). * **Lead Style:** Long straight leads (LS) are typically used for through-hole PCB mounting. --- ### Typical Applications 1. **Switch-Mode Power Supplies (SMPS):** Used as a "snubber" to protect switching transistors from voltage spikes. 2. **Line Filters:** Suppressing high-frequency noise on power lines. 3. **Inverters:** High-voltage DC-to-AC conversion circuits. 4. **Coupling/Decoupling:** Blocking DC while allowing AC signals to pass in high-voltage stages. ---