Oil Filled Capacitor
An oil filled capacitor is usually an AC-voltage-rated or dual-voltage-rated (AC/DC) capacitor designed for circuits requiring high-reliability. All AC-rated oil filled capacitors supplied by Richardson RFPD are UL, CSA, and VDE approved.
Oil filled capacitors are used where high-peak-voltages, high-current, and long operating life are needed.This includes high-voltage filtering and energy storage, motor run, motor start, commutating, high-voltage lighting, HVAC, and arc suppression (snubber) applications. These capacitors are found in industrial heating systems, AC motors, DC motors, high intensity discharge (HID) lighting, high-voltage lighting ballasts, and power supplies. Whereas aluminum electrolytic capacitors are nearly always polarized (positive terminal and negative terminal), oil filled capacitors are non-polar and can therefore be used in all voltage reversal applications. These capacitors include a self-healing capability and are made from oil-impregnated metalized polypropylene. Some oil filled capacitors are quite unique, in that they may include a resistor connected across the terminals. Also, in some cases a single package can include two separate capacitors.
Key characteristics for choosing an oil filled capacitor include overall Peak Voltage rating (V), operating life (hours), and Case/Package Type. Richardson RFPD is pleased to work with industry-leading manufacturers Cornell Dubilier, GE, and Genteq to provide a large selection of oil filled capacitors for our customers.