The **440LQ68-R** is a high-performance, high-voltage ceramic disc capacitor manufactured by **Vishay Cera-Mite**. It is part of the 440L series, which is specifically designed for AC line applications and electromagnetic interference (EMI) suppression. --- ### ## Technical Specifications The following table outlines the primary electrical and physical characteristics of the 440LQ68-R: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 0.0068 µF (6.8 nF) | | **Tolerance** | ±20% | | **Rated Voltage** | 440 VAC (X1), 300 VAC (Y2) | | **Dielectric Material** | Ceramic (Class 2) | | **Operating Temperature** | -30°C to +125°C | | **Mounting Type** | Through-Hole (Radial) | | **Safety Class** | X1 / Y2 | --- ### ## Key Features and Construction 1. **Safety Rating (X1/Y2):** * **X1 Rating:** Used in "across-the-line" applications where failure would not lead to electric shock but requires high impulse resistance. * **Y2 Rating:** Used in "line-to-ground" applications where failure could lead to electric shock; these capacitors are designed to fail open-circuit for safety. 2. **Encapsulation:** The device is encapsulated in a flame-retardant epoxy resin (UL 94 V-0), providing moisture resistance and mechanical protection. 3. **Dielectric Performance:** Utilizes a high-K ceramic dielectric, allowing for a high capacitance value in a relatively small disc package. --- ### ## Common Applications The 440LQ68-R is typically found in power management and filtering circuits: * **EMI/RFI Filtering:** Suppressing high-frequency noise in switch-mode power supplies (SMPS). * **Antenna Coupling:** Providing isolation and filtering for radio frequency equipment. * **Line Bypass:** Protecting sensitive electronics from transients on the AC mains. * **Home Appliances:** Used in white goods (washers, dryers) to comply with international safety and interference standards. --- ### ## Compliance and Standards This component meets several international safety standards, ensuring it can be used in global markets: * **IEC 60384-14** * **UL 60384-14** * **CSA E60384-1:03** * **RoHS Compliant**