August 18, 2026 / SemiMedia / — Vishay Intertechnology has introduced the SMDY1…S series of AC line-rated ceramic disc safety capacitors, combining a 300 VAC Y1 rating with 1500 VDC capability in a surface-mount design.

Developed for EMI and RFI suppression and filtering, the capacitors require up to 40% less board space than Vishay’s previous-generation devices.

The Y1 rating allows the devices to bridge double or reinforced insulation. They can also operate in DC networks up to 1500 VDC in accordance with the applicable IEC Annex H requirements.

The SMDY1…S series complies with IEC 60384-14 and carries UL, CSA, VDE, ENEC and CQC certifications.

Its surface-mount construction supports automated pick-and-place assembly and reflow soldering, reducing the manual insertion and soldering processes associated with through-hole ceramic disc capacitors.

The devices provide insulation resistance of at least 10,000 MΩ and operate from −55°C to +125°C. Vishay performs 100% production testing covering AC voltage, capacitance, dissipation factor, insulation resistance and final visual inspection.

The capacitors use copper- and silver-plated ceramic discs encapsulated in UL 94 V-0 flame-resistant epoxy resin. They are RoHS-compliant and halogen-free.

The A case size covers capacitance values from 10 pF to 680 pF, while the B case size covers 1000 pF to 1500 pF.

Applications include industrial motor drives, welding equipment, inverters, UPS systems, rail power supplies, HVAC systems, LED drivers, switch-mode power supplies, AC/DC converters, home appliances and automotive charging stations.

Samples and production quantities are available now, with lead times of 12 weeks.