Since a there is a requirement for UL approval, EPCOS offers X2 and Y2 capacitors for the charger input. For X2 capacitors, there are two series, the standard B3292 which is rated at 305 VAC with a capacitance value of up to 10µF. Another X2 series is the “Heavy Duty” X2 series, B3293. This series is also rated at 305 VAC, but the capacitance value has a maximum value of 45µF. In the Y2 capacitor type EPCOS offers the B3202 that is rated at 300 VAC, with a capacitance value of up to 1µF. Due to the nature of this application, there is a need for components that can meet the high humidity test. The most standard test in the market right now is the 85°C, 85% relative humidity with a voltage load of 240 VAC and can last for 1000 hours with a capacitance drift of ±10%. The B3293x series can withstand this test and has been subjected to a more stringent test with higher voltage load of 290 VAC and the capacitors have lasted 2000 hours with capacitance drift of less than ±2%. One other requirement being seen in this position is a requirement that the capacitors have AEC-Q200 certification. This series has met the requirements and has been certified with AEC-Q200.