## Overview of the 30LVD55-R The **30LVD55-R** is a specific type of **Ceramic Disc Capacitor** manufactured by Vishay Cera-Mite. It belongs to the **Low Voltage (LVD)** series, primarily designed for decoupling, bypass, and filtering applications in electronic circuits. --- ### Technical Specifications Below are the primary electrical and physical characteristics for this component: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 0.055 µF (or 55 nF) | | **Voltage Rating** | 30 VDC | | **Tolerance** | +80% / -20% (Z5U Dielectric) | | **Dielectric Material** | Z5U (Class 2) | | **Mounting Type** | Through-Hole | | **Lead Style** | Radial Leads | | **Operating Temp Range** | +10°C to +85°C | --- ### Key Features 1. **Compact Design:** The disc-style construction allows for high capacitance density in a small footprint. 2. **Stability:** While Z5U dielectrics are not highly stable over temperature, they offer excellent volumetric efficiency for non-critical bypass applications. 3. **Low Inductance:** Radial lead configuration helps in reducing parasitic inductance at higher frequencies compared to axial leads. 4. **Moisture Resistance:** The ceramic body is typically coated with a flame-retardant epoxy resin for environmental protection. --- ### Common Applications The 30LVD55-R is widely used in legacy and general-purpose consumer electronics, including: * **DC Power Supply Filtering:** Smoothing ripples in low-voltage power rails. * **Bypassing:** Diverting high-frequency noise to ground to protect sensitive ICs. * **Coupling/Decoupling:** Blocking DC components while allowing AC signals to pass between circuit stages. --- ### Identification Guide (Marking) On the body of the capacitor, you will typically find markings represented as follows: * **30LVD55:** The series name and capacitance code. * **-R:** Often denotes compliance with RoHS (Restriction of Hazardous Substances) standards.