Vishay SMDY1 series EMI suppression safety capacitor

The Vishay SMDY1 series of surface-mount AC line rated ceramic disc safety capacitors offers a Y1 rating of 500VAC and 1500VDC. Designed to withstand harsh, high humidity environments, the Vishay BCcomponents SMDY1 series devices offer industry-high capacitance to 4.7nF.

The capacitors will be used for EMI/RFI filtering in power supplies, solar inverters, smart meters, and LED drivers. For these applications, the closest competing devices only offer capacitance up to 1.5nF and Y1 ratings to 300VAC, with no DC rating. In addition, the SMDY1 series offers higher humidity resistance with a Class IIB humidity grade (in accordance with IEC60384-14 annex I) and a moisture sensitivity level of 2a.

Allowing for surface-mount assembly with a reflow soldering process, SMDY1 series capacitors reduce production costs. Compared to through-hole devices, they offer a lower profile and eliminate the need for clearance space on the backside of the PCB. RoHS-compliant and halogen-free, the components consist of a copper-plated ceramic disc and feature encapsulation made of flame-resistant epoxy resin in accordance with UL 94 V-0.

Vishay-SMDY1-Series-EN-Image

Features/Applications

Features Applications
  • Complying with IEC 60384-14
  • Humidity class IIB annex I achieved
  • Singlelayer AC disc safety capacitors
  • X1, Y1 according to IEC 60384-14
  • Line-to-line filtering (class X)
  • Line-to-ground filtering (class Y)
  • Primary and secondary coupling (SMPS)
  • Industrial and consumer
  • EMI / RFI suppression and filtering

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