The **30LVD15-R** is a high-voltage, ceramic disc capacitor manufactured by **Vishay Cera-Mite**. It is part of the "Lower Voltage" (LVD) series, though in the context of ceramic discs, it is designed to handle significant AC and DC voltages. --- ### ## Technical Specifications The following table outlines the primary electrical characteristics of the 30LVD15-R: | Parameter | Specification | | :--- | :--- | | **Capacitance Value** | 0.015 µF (15,000 pF) | | **Voltage Rating (AC)** | 300 VAC | | **Voltage Rating (DC)** | ~1000 VDC to 1500 VDC (Series dependent) | | **Tolerance** | ±20% (Standard for LVD series) | | **Temperature Coefficient** | Y5U (General purpose) | | **Mounting Type** | Through-Hole (Radial Leads) | | **Lead Spacing** | ~0.375 inches (9.5 mm) | --- ### ### Key Features and Construction 1. **Dielectric Material:** It uses **Y5U** ceramic material. This means the capacitance is stable at room temperature but can fluctuate significantly as temperatures reach the lower (-30°C) or upper (+85°C) limits. 2. **Encapsulation:** The component is coated in a flame-retardant epoxy resin (UL 94 V-0 rated) to protect against moisture and mechanical shock. 3. **Lead Configuration:** It typically features tinned copper radial leads, designed for PCB insertion. --- ### ### Common Applications Because of its high AC voltage rating and compact disc shape, it is frequently used in the following areas: * **EMI/RFI Filtering:** Used in line-to-ground (Y-capacitor) or line-to-line (X-capacitor) configurations to suppress electrical noise. * **Power Supplies:** Found in the primary stage of Switched-Mode Power Supplies (SMPS) for snubbing and decoupling. * **Lighting Ballasts:** Used in electronic ballasts for fluorescent or HID lighting. * **Appliances:** Integrated into household white goods to prevent motor noise from feeding back into the power grid. --- ### ### Safety and Identification The "30" in the prefix usually denotes the physical size or series class within the Vishay Cera-Mite catalog, while "LVD" indicates it belongs to the Low Voltage Disc line (optimized for AC mains applications). > **Warning:** When replacing this part, ensure the AC voltage rating matches or exceeds the original. Using a DC-rated capacitor of the same value in an AC circuit may lead to component failure or fire.