Syfer / Knowles Enhanced Safety Capacitors (Class X1, X2, Y2)

Syfer / Knowles Enhanced Safety-Certified Capacitors (Class X1, X2, Y2) comply with international UL and TÜV specifications to provide designers the option of using a surface-mount ceramic multilayer capacitor to replace leaded film types. These capacitors offer the benefits of simple pick-and-place assembly, a lower profile, and reduced board space required. The FlexiCap™ version of these capacitors minimizes the risk of mechanical cracking. The lineup features a range of high capacitance values for selected case sizes. Syfer / Knowles Enhanced Safety-Certified Capacitors (Class X1, X2, Y2) are ideal for modems, AC-DC power supplies, and other applications where lightning strike or other voltage transients represent a threat to electronic equipment.

Features

  • Surface-mount multilayer capacitors
  • Meets Class Y2/X1, X1, and X2 requirements
  • Approved for mains AC voltages up to 305VAC
  • Approved by UL and TÜV
  • Sizes include 1808, 1812, 2211, 2215, 2220, and 2720
  • Reduces board area and height restrictions
  • SYS range suitable for use in equipment within the scope of IEC 62368
  • Certification specifications include: IEC/EN 60384-14:2013 +A1:2016/ IEC/EN 60384-14:2023, and UL/CAN/CSA 60384 14:2014
  • Reduced assembly costs over conventional through-hole components
  • FlexiCap termination available on all sizes
  • Range qualified to AEC-Q200

Applications

  • Typical usage in high-power AC-DC converters in industrial and automotive EV applications
  • SMPS AC front-ends, AC-DC converters, and DC-DC converters 
Published: 2011-02-28 | Updated: 2025-11-04