The **30LVD68-R** is a high-voltage, radial-leaded ceramic disc capacitor manufactured by Vishay (specifically under the Cera-Mite brand). These components are primarily designed for high-voltage power supplies and electronic ballast applications. --- ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Capacitance** | 6,800 pF (0.0068 µF) | | **Voltage Rating** | 3,000 VDC (3 kV) | | **Tolerance** | ±20% (Standard for this series) | | **Dielectric Type** | LVD (Low Voltage/High Voltage Ceramic) | | **Temperature Coefficient** | Y5U (General Purpose) | | **Mounting Type** | Radial Through-Hole | | **Operating Temperature** | -30°C to +125°C | --- ## Key Features 1. **High Reliability:** The LVD series is engineered to handle high voltage stresses with minimal leakage current. 2. **Compact Form Factor:** Despite the 3kV rating, the radial disc design allows for high-density mounting on PCBs. 3. **Low Dissipation Factor:** Ensures minimal heat generation during high-frequency operation. 4. **Coating:** Typically encapsulated in flame-retardant epoxy resin (UL 94 V-0 rated) to protect against moisture and mechanical shock. --- ## Common Applications * **Switch-Mode Power Supplies (SMPS):** Used for snubber circuits to protect switching transistors from voltage spikes. * **Lighting Ballasts:** Used in HID (High-Intensity Discharge) and fluorescent lighting systems. * **DC-DC Converters:** Acts as a decoupling or filter capacitor in high-voltage rails. * **CRT Displays:** Though less common today, they are used in high-voltage sections of older monitors and televisions. --- ## Deciphering the Part Number * **30:** Indicates the voltage rating (30 represents 3,000 Volts). * **LV:** Refers to the Cera-Mite "LVD" series. * **D68:** Represents the capacitance value (68 identifies the significant digits). * **-R:** Generally indicates compliance with RoHS (Restriction of Hazardous Substances) standards.