The part number **47LR-152YR-R** refers to a high-voltage, radial leaded ceramic disc capacitor, typically used for RFI (Radio Frequency Interference) and EMI (Electromagnetic Interference) suppression. These are often classified as **Safety Capacitors**. --- ### ## Technical Specifications Below is a breakdown of the typical technical parameters for this component: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 1500 pF (1.5 nF) | | **Tolerance** | ±20% (indicated by 'M' or 'Y' suffix logic) | | **Voltage Rating** | 400V AC (X1) / 250V AC (Y2) | | **Dielectric Material** | Ceramic (Class II) | | **Mounting Type** | Through-Hole (Radial Leads) | | **Operating Temp** | -40°C to +125°C | --- ### ## Key Features & Construction 1. **Safety Classification:** This part is usually rated as **X1/Y2**. * **X1:** Designed for "Across-the-line" use (line to line). * **Y2:** Designed for "Line-to-ground" use. These are "fail-safe" capacitors; if they fail, they are designed not to lead to an electric shock. 2. **Part Number Breakdown (Common Logic):** * **47LR:** Series designation (often associated with high-voltage disk capacitors). * **152:** The capacitance value. `15` followed by `2` zeros = 1500pF. * **YR:** Refers to the temperature coefficient and tolerance characteristics. * **R:** Usually indicates compliance with **RoHS** (Reduction of Hazardous Substances) standards. --- ### ## Common Applications These components are critical in power supply design and electronic protection circuits: * **Switch Mode Power Supplies (SMPS):** Used for filtering line noise. * **Household Appliances:** Found in washing machines and refrigerators to prevent motor noise from entering the grid. * **Power Adapters:** Used in chargers for laptops and smartphones. * **Antenna Coupling:** Providing isolation between the circuit and the antenna. --- ### ## Example Connection Diagram When used as a Y-capacitor (Line to Ground): ```text Line (L) --------[ Capacitor ]-------- Ground (G) Neutral (N) -----[ Capacitor ]-------- Ground (G) ```