The **440LQ10-R** is a specific type of high-voltage ceramic disc capacitor, part of the Cera-Mite 440L series manufactured by **Vishay**. These components are primarily designed for AC line applications and electromagnetic interference (EMI) suppression. --- ### ## Technical Specifications Below are the primary technical parameters for the 440LQ10-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Ceramic Disc Capacitor | | **Capacitance Value** | 0.01 µF (10,000 pF) | | **Voltage Rating** | 440 VAC / 500 VAC | | **Safety Class** | X1 / Y1 (Safety Rated) | | **Tolerance** | ±20% | | **Temperature Coefficient** | Y5V | | **Mounting Type** | Through-Hole (Radial) | --- ### ## Key Features 1. **Safety Certifications**: These capacitors are "Safety Recognized." The **X1/Y1** rating means they are designed to withstand high-voltage impulses and are safe for use in positions where failure could lead to electric shock. 2. **Dielectric Material**: It uses a **Y5V** dielectric. This offers high capacitance in a small size, though it is less stable over wide temperature fluctuations compared to NP0 or X7R materials. 3. **Robust Construction**: Encapsulated in flame-retardant epoxy resin (UL 94 V-0 rated), protecting the internal ceramic disc from moisture and mechanical stress. --- ### ## Typical Applications The 440LQ10-R is commonly found in the following circuits: * **Line-to-Ground (Y-Capacitor):** Used to bypass common-mode noise to the ground. * **Line-to-Line (X-Capacitor):** Used to suppress differential-mode interference. * **Power Supplies:** Specifically in Switched-Mode Power Supplies (SMPS) for EMI filtering. * **Antenna Coupling:** Providing isolation and filtering for radio frequency equipment. --- ### ## Circuit Diagram Symbol In a schematic, this part is represented by the standard capacitor symbol, often marked with a safety certification icon or specific "X" or "Y" designations: ```text Line (L) | ---|--- (440LQ10-R) --- --- | Ground (GND) ```