The part number **296HC503C3C** refers to a high-voltage, conduction-cooled power capacitor, typically manufactured by companies like **Illinois Capacitor** (now part of Cornell Dubilier/CDE). These components are designed for high-frequency induction heating, resonant circuits, and wireless charging applications. --- ### 1. Technical Specifications Breakdown The alphanumeric code represents specific electrical and physical characteristics: | Parameter | Value / Specification | | :--- | :--- | | **Capacitance** | 50.0 µF (Microfarads) | | **Voltage Rating** | 300 - 500 VAC (Dependent on frequency) | | **Maximum Current** | ~500 A (RMS) | | **Operating Frequency** | High Frequency (Typical range 5 kHz to 100 kHz) | | **Cooling Method** | Conduction Cooled (via copper bus bars) | | **Tolerance** | ±10% | --- ### 2. Key Features * **Polypropylene Dielectric:** Uses self-healing metallized polypropylene film, which offers low dissipation factors and handles high power levels with minimal heat generation. * **Conduction Cooling:** Unlike standard capacitors that dissipate heat through air, this model is designed to bolt directly to water-cooled copper bus bars. The metal casing acts as a heat sink. * **High Current Density:** Engineered to handle hundreds of Amperes (RMS) in resonant tank circuits. * **Rugged Construction:** Usually features a rectangular or "hockey puck" style housing with heavy-duty terminals to minimize ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance). --- ### 3. Common Applications These capacitors are industrial-grade components found in: 1. **Induction Heating:** Used in the resonant tank circuit to generate the oscillating magnetic field required to heat metals. 2. **Resonant Power Supplies:** Found in high-power converters where soft-switching is required. 3. **EV Wireless Charging:** Integrated into the primary and secondary coils of high-power inductive charging pads. 4. **Motor Drives:** Used in specific heavy-industrial filtering or phase-shifting roles. --- ### 4. Safety and Mounting Note Because this capacitor handles extremely high currents, **proper torque** and **surface contact** are critical. If the bolted connection to the bus bar is loose, the resulting resistance will cause localized overheating and likely lead to component failure or fire.