Compared with conventional X2 capacitors designed for rated voltages of 305 V AC, these new components offer a higher rated voltage of 350 V AC. This makes them suitable for EMI suppression in input filters in power supplies – specifically for applications on the North American market – and output filters of photovoltaic inverters, for example.
The capacitance range extends from 0.47 µF to 10 µF in accordance with the E12 series. Even under severe ambient conditions the new capacitors are characterized by a stable capacitance, as verified in damp heat tests, in which the change in capacitance does not exceed 7.5 percent (test conditions: 1000-hours at 85°C with a relative humidity of 85 percent and a voltage of 330 Vac). The maximum operating temperature of the components is 110°C.
The X2 capacitors are approved in accordance with UL and EN and, depending on the capacitance, are available with a lead spacing of 27.5 mm for the B32924 or 37.5 mm for the B32926. Both the casing and the epoxy resin sealing material comply with the UL 94 V-0 standard.
The capacitors are especially suitable for applications with higher demands in terms of current capability, as well as capacitive power supplies.
Further information can be found at www.epcos.com/emi_capacitors