Abstract
Multilayer ceramic capacitors (MLCCs) are widely used in power electronics. Because paraelectric and ferroelectric material are non-magnetic dielectrics, B-field effects are typically ignored in datasheets and design consideration. This letter reveals a significant, previously undocumented phenomenon: B-fields cause substantial high-frequency impedance variation in MLCCs, with observed changes exceeding 43% under B-fields up to 491 mT. Supplementary material includes all the design files for the measurement kit and all the raw data to ensure reproducibility. Raman spectroscopy and microstructure were employed to characterize the material composition and physical structure of the MLCCs. © 2025 IEEE.
| Original language | English |
|---|---|
| Pages (from-to) | 3117-3123 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 41 |
| Issue number | 3 |
| Online published | 27 Aug 2025 |
| DOIs | |
| Publication status | Published - Mar 2026 |
Funding
This work is supported by the joint funds of Industryuniversity-research of Shanghai Academy of Spaceflight Technology under Grant SAST2023-050.
Research Keywords
- B-field
- ferroelectric material
- high-frequency impedance
- Multilayer Ceramic capacitor
- paraelectric material
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