New Ceramic Disc Capacitors for Class X1(760 VAC) /Y1(500 VAC) Applications


ByAbhiemanyu Pandit 0

New Ceramic Disc Capacitors for Class X1(760 VAC) /Y1(500 VAC) Applications

Vishay Intertechnology released a new series of automotive grade AC line rated ceramic disc capacitors with its firs AEC-Q200 qualification for ClassX1(760 VAC)/Y1(500 VAC) applications in conformity with IEC 60384-14.4. It also added two new components offering capacitance of 6.8 nF and 10 nF, respectively to its existing AY2 Series .The Disc of AY1 Series offers a capacitance range from 470pF to 4700 pF with tolerance of ± 20 % and can withstand 85 / 85 / 1000 h biased humidity testing, 1000 temperature cycles from -55 °C to +125 °C, and ten 10 kV pulses per polarity. This feature makes it ideal for applications such as filter capacitors on DC/DC converters for electric (EV), hybrid electric (HEV), and plug-in-electric vehicles (PHEV).


In addition to this, the devices comes with a copper-plated disc with tinned copper-clad steel connection leads featuring only 0.6mm or 0.8 mm diameters.  The devices are RoHS-compliant, halogen free and the encapsulation is made of flame-resistant epoxy resin in conformity with UL V-0.


The features are:

  • Optimized for AC line filtering and primary / secondary coupling in on-board chargers and DC/DC converters.
  • AEC-Q200 qualified 
  • Withstands 85 / 85 / 1000 h test 
  • Can pass 1000 temperature cycles (from -55 °C to +125 °C)



Ceramic class


Ceramic dielectric


Voltage (VAC)



Min. capacitance (pF)


Max. capacitance (pF)





Samples and production quantities of the AY1 series are available now with straight leads with spacing of 10 mm or 12.5 mm and lead times of eight weeks.

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