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    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

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    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Molex Acquires Smiths Interconnect

    Murata Integrates Component Models into Cadence EDA Tools

    Wk 42 Electronics Supply Chain Digest

    Stackpole Introduces Automotive Thick Film Wide Termination Chip Resistors

    September 2025 ECIA US Components Sales Sentiment Continues in Optimism

    Bourns Release Automotive 4-Terminal Shunt Resistors

    Bourns Releases High Inductance Common Mode Choke

    Vishay Releases Automotive TO-220 Case 50W Thick Film Power Resistor

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    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

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Murata Unveils Compact MLCCs with Extended Creepage Distance

25.5.2023
Reading Time: 2 mins read
A A

Leading electronics manufacturer Murata has introduced multi-layer ceramic (MLCC) moulded capacitors that successfully draw on the company’s advanced resin moulding capabilities.

The EVA series of MLCCs moulded capacitors have properties that will be highly appealing to electric vehicle (EV) manufacturers. These capacitors are ideal for a wide variety of applications, such as on-board chargers (OBCs), inverters and DC/DC converters, battery management systems (BMS), and wireless power transfer (WPT) implementations.

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Developed in accordance with IEC60384-14 requirements, the new safety-certified Y2 class MLCCs will be highly effective at suppressing common mode noise in next generation EVs.

Housed in surface-mount packages (each with a 12.7mm x 6.0mm footprint, plus a 3.7mm profile), these compact components have 305VAC/1500VDC voltage ratings and support industry-leading 10mm creepage distances. Consequently, they are able to address the greater isolation that migration to 800V powertrains will mandate, yet also remain aligned with the need for miniaturization in modern automotive systems.

The capacitance values of the EVA series range from 0.1nF to 4.7nF. These MLCCs are AEC-Q200 qualified, with an -55˚C to+125˚C operation temperature range covered. They have elevated withstand voltages of 2000VAC/60s and 4000VDC/60s. In addition, they exhibit low equivalent series inductance (ESL), so performance is not impaired at high frequencies. The metal terminal arrangement utilized in these capacitors provides greater elasticity. Formation of solder cracks and deflection cracks is thereby mitigated, so long-term reliability can be assured.

“With EV powertrains moving to higher voltages, longer creepage distances are now being required. Unfortunately, at the same time, constituent components need to take up less physical space,” explains Takahiro Yoshida, General Manager of Ceramic Capacitor Business Unit, Marketing Group, Marketing Department at Murata. “This is why our EVA series MLCCs will have a real impact, as use of resin moulding allows them to combine compactness with extended creepage.”

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Source: Murata

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