MPX Film Capacitors CDE / Illinois Capacitor MPX Film Capacitors are made from metallized polypropylene and coated in a flame-retardant, solvent-resistant case. The capacitors are available with lead spacing options ranging from 10mm to 52.5mm and capacitances ranging from 0.01µF to 45µF. These devices feature a 305VAC rating and have achieved an 85/85 temperature, humidity, bias (THB) rating. MPX capacitors are available in sizes ranging from 13mm x 11mm x 5mm to as large as 57.5mm x 53mm x 50mm. The CDE / Illinois Capacitor MPX series has a load life reliability of 1000 hours at +110°C with 125% of rated voltage.