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High Voltage MLCC: 250V, 500V, 1kV, 2kV, 3kV

Sourcing and procurement support for high-voltage multilayer ceramic capacitors used in industrial power supplies, inverters, motor drives and EV onboard chargers.

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What are High Voltage MLCC?

High voltage MLCC are ceramic capacitors rated from 250V to 3kV or higher, using C0G (NP0) or X7R dielectrics. They are used in industrial power supplies, inverters, motor drives, EV onboard chargers, and telecom rectifiers where withstand voltage is critical.

Key Takeaways

  • Common voltage ratings: 250V, 500V, 1kV, 2kV, 3kV
  • Common dielectrics: C0G (NP0) for stability, X7R for higher capacitance
  • Widely used in industrial power, inverters, motor drives, EV OBC
  • Package sizes typically 0805 to 2220; larger packages for higher voltages
  • Creepage distance and insulation resistance are key design considerations
Voltage Range250V, 500V, 1kV, 2kV, 3kV
Dielectric TypesC0G (NP0), X7R
Capacitance Range10pF – 1µF (depending on voltage and dielectric)
Package Sizes0805, 1206, 1210, 1812, 2220
Key ApplicationsIndustrial SMPS, Inverters, EV Onboard Chargers, Motor Drives, Telecom Rectifiers
Procurement NotesSpecify creepage distance, insulation requirements, and any safety certifications needed

Typical Applications

Industrial Power Supplies InvertersMotor Drives EV Onboard ChargersTelecom Rectifiers HV DC-DC Converters

Related Brands

MurataTDKKYOCERA AVXKEMETYAGEOFenghua / FH

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  • Target voltage rating
  • Required capacitance and dielectric
  • Quantity and target lead time
  • Safety certification requirements (if any)
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FAQ — High Voltage MLCC

What is the difference between high-voltage X7R and C0G MLCC?

C0G (NP0) provides ultra-stable capacitance over temperature and voltage, but limited to smaller capacitance values (pF-nF range). X7R offers higher capacitance (nF-µF) but with ±15% variation over temperature. Choose C0G for precision and X7R for bulk decoupling.

How to select high-voltage MLCC for an EV onboard charger?

Consider voltage derating (typically 50-70% of rated voltage), temperature range, and safety certifications. Automotively-qualified AEC-Q200 parts are recommended. AIMLCC can assist with BOM review and cross-reference.

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