The **440LD56-R** is a specific model of a **Ceramic Disc Capacitor** manufactured by Vishay Cera-Mite. It is part of the "Low Dissipation" series designed for high-frequency and high-voltage applications. --- ### ## Technical Specifications Below are the primary technical parameters for the 440LD56-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Ceramic Disc Capacitor | | **Capacitance** | 560 pF (Picofarads) | | **Voltage Rating** | 440 VAC (RMS) / High Voltage DC equivalent | | **Tolerance** | ±10% (Typical for this series) | | **Temperature Characteristic** | N750 (Linear temperature coefficient) | | **Dissipation Factor** | Low (Typically < 0.2%) | | **Lead Style** | Radial Leads | --- ### ### Key Features 1. **Low Dissipation Factor:** The "LD" in the part number stands for Low Dissipation. This means the capacitor has very low energy loss, making it ideal for circuits where heat generation must be minimized. 2. **High Stability:** The N750 dielectric provides a predictable and stable capacitance change relative to temperature fluctuations. 3. **High Voltage Rating:** Specifically rated for AC line applications, often used in power supplies and protection circuits. 4. **Coating:** Usually encapsulated in flame-retardant epoxy resin (UL 94 V-0 rated) for safety and environmental protection. --- ### ### Common Applications The 440LD56-R is typically found in the following electronic environments: * **Horizontal Deflection Circuits:** Historically used in CRT monitors and televisions due to high-frequency stability. * **Snubber Circuits:** Used to suppress voltage spikes in switching power supplies. * **Lighting Ballasts:** Integrated into electronic ballasts for fluorescent or HID lighting. * **High-Frequency Coupling:** Used in circuits where AC signals need to pass while blocking DC, specifically in high-voltage stages. --- ### ### Part Number Breakdown (Generic) * **440:** Often refers to the AC voltage rating (440 VAC). * **LD:** Indicates the "Low Dissipation" series. * **56:** Represents the significant digits of capacitance (56). * **-R:** Usually indicates compliance with RoHS (Restriction of Hazardous Substances) standards.