Holy Stone Safety-Rated Ceramic Capacitors

Holy Stone has one of the broadest industry offerings of Safety Certified Multilayer Ceramic Capacitors (MLCC’s). Our SCC series includes X2 and X1/Y2 classes rated at 250Vrm. These products are certified compliant to IEC60384-14 and UL60384-14. A 305Vrms 2220 size X2 version is also offered with compliance confirmed under TUV test report number 28208004 (May 27, 2010). These products are available in Class I NPO (COG) and Class II X7R dielectrics.

Characteristics of Safety MLCC’s:
Safety Capacitors have designations of X or X/Y. The X designation is used in “line to line” circuit applications in which a failure would not result in electrical shock. The Y designation refers to “line to ground” circuit applications where failure and loss of the ground connection could result in electrical shock. The X/Y designation refers to products that have been certified for use in either “line to line” or “line to ground” applications.

The numeric designation following the X(2), X(1)Y(2) refers to the AC Voltage Rating and the Impulse Voltage to which the product has demonstrated compliance. In the case of X2 the Rated AC Voltage is 250Vrms with Impulse testing performed at 2500Vrms Impulse Voltage. In the case of the X1/Y2 the Rated AC Voltage is 250Vrms with Impulse testing performed at 5000Vrms. (see Summary Specifications Chart for all Characteristics)

Holy Stone also offers a line of X1Y2 Safety Certified Capacitors suitable for Automotive Applications. These products are particularly suited for charging systems for Electric and Chargeable Hybrid Automobiles. Please see our AEC Automotive product line for AEC-Q200 and ACC product line for TS16949 (PPAP Level 3 + AEC-Q200).


  • Small size and high capacitance
  • Suitable for reflow soldering
  • Safety standard approval by IEC60384-14, UL 60950-1 and UL60384-14
  • RoHS compliant and Lead (Pb) free option
  • Certified to: TUV R50005234, R50103496 & UL E229738 TUV R50162550 & UL E300818 & UL E229738 for Lead (Pb) free
  • Available with Superterm® flexible termination
  • Available with proprietary arc prevention coating


  • Telecommunications Equipment including Telephones, Modems, Facsimiles, etc.
  • Electronic Equipment and Appliances requiring protection from transient surges or lighting.
  • Electric and Hybrid Automobiles in the charging circuitry.

Holy Stone Capacitors for Safety Applications

Please see the below schematic and reference for a LED lighting design example:

LED Lighting - Capacitors for Lighting

C1: X Capacitor  SCC Series, 103-333pF, X x 1pcs
C2: Y Capacitor  SCC Series, 471-472pF, Y x 2pcs
C3: Primary-Secondary Coupling  SCC Series, 471-472pF, Y x 1pcs
C4: Smoothing Cap.

 MVC/HVC Series, 333-104pF, 630-1KVdc

 HCP Series, 400Vdc

C5: Snubber  MVC Series, 102-224pF, 250-630Vdc x 1pcs
C6: Snubber  MVC/HVC Series, 101-102pF, 630-1KVdc x 1pcs
C7: Output Smoothing  HCC/MVC Series, 105-106pF, 25-100Vdc x 1pcs