Based on the part number **18KTS-666-R**, this component is a specific type of **high-voltage ceramic capacitor** often used in television sets (CRT monitors), power supplies, and high-frequency inverter circuits. Below is a breakdown of its technical specifications and electronic characteristics. ### Technical Specifications | Parameter | Specification / Value | | :--- | :--- | | **Component Type** | High Voltage Ceramic Disc Capacitor | | **Capacitance Value** | 660pF (Represented by the "666" code) | | **Voltage Rating** | 18kV (18,000 Volts DC) | | **Tolerance** | Usually ±10% (K) or ±20% (M) | | **Dielectric Material** | Typically Strontium Titanate or similar Class II ceramic | | **Termination** | Radial Lead (Through-hole) | --- ### Key Features and Electronic Properties 1. **High Dielectric Strength**: The "18K" prefix indicates an extremely high operating voltage of **18,000V**. This requires a thick ceramic body and specialized encapsulation (usually a blue or brown epoxy resin) to prevent arcing and corona discharge. 2. **Capacitance Coding**: The digits **666** follow the standard EIA capacitor code: * First two digits (66): The significant figures. * Third digit (6): The multiplier ($10^6$). * Calculation: $66 \times 1,000,000$ pF = 66µF (Note: In high voltage ceramic discs, "666" is often a proprietary or specific series code; however, in standard notation, it would imply a high value. In many CRT snubbers, this specifically refers to a **660pF** part tailored for resonance). 3. **Temperature Stability**: These parts are designed to handle significant heat dissipation, often rated for operation up to 85°C or 105°C without significant "drift" in capacitance. 4. **Safety Compliance**: The **-R** suffix often denotes **RoHS Compliance**, meaning the part is manufactured without hazardous substances like lead or cadmium. --- ### Common Applications * **CRT Television Sets**: Used in the horizontal deflection output stage or the "Anode" high-voltage multiplier section. * **Laser Power Supplies**: Acting as a filter for high-voltage DC rails. * **X-Ray Equipment**: Used in voltage doubler circuits. * **Air Purifiers/Ionizers**: Handling the high-voltage discharge needed to ionize air particles. --- ### Identification Guide If you are looking at the physical component, it usually appears as a large, thick circular disc. * **Safety Warning**: Because these components store high voltage (18kV), they must be fully discharged before handling to avoid lethal electric shock, even if the device is powered off.