Murata Commercializes Resin Molded Surface Mount Type MLCC for Noise Suppression of Electric Vehicles

05/30/2023

Murata Commercializes Resin Molded Surface Mount Type MLCC for Noise Suppression of Electric Vehicles

Key words: Murata Capacitor Car Charger Time: 2023-05-30 14:19:28 Source: Murata


"In recent years, in the electric vehicle (EV) market, in order to shorten the charging time, the voltage requirements for batteries have been continuously increased. Traditional EVs are equipped with a battery voltage of more than 400 volts, but models with more than 800 volts have already been launched. At the same time, the power voltage handled by on-board power electronic devices such as on-board chargers (OBC) and motor drive inverters is also increasing, and the components that make up these devices are required to have a high level of safety under high-voltage loads. noise countermeasures.


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Capable of handling high voltage by ensuring creepage distance while realizing small size and thin profile


Murata Manufacturing Co., Ltd. (hereinafter referred to as "Murata") has developed the "EVA Series" of resin-molded surface-mount type multilayer ceramic capacitors for noise suppression of electric vehicles. Despite its small size and thin thickness (12.7 x 6.0 x 3.7 mm), this product ensures the creepage distance (1) (10 mm) required for high-voltage loads and supports Y2 in the international standard "IEC60384-14" Level (2) This is a resin molded surface mount type multilayer ceramic capacitor product that Murata has innovatively developed. Mass production is scheduled to begin in June 2023.


(1) Creepage distance: refers to the shortest distance along the package surface connecting component terminals.


(2) Class Y2: Refers to the class of insulation state that ensures basic insulation protection against electric shock in the safety standard class specified in IEC60384-14. Y2 class capacitors are called basic insulation capacitors and are used in kits with ground terminals.


distribution of ic chips


In recent years, in the electric vehicle (EV) market, in order to shorten the charging time, the voltage requirements for batteries have been increasing. Traditional EVs are equipped with a battery voltage of more than 400 volts, but models with more than 800 volts have already been put on the market. At the same time, the power voltages handled by on-board power electronic devices such as on-board chargers (OBC) and motor drive inverters are increasing, and components constituting these devices are required to have highly safe noise suppression countermeasures for high-voltage loads . In general, noise suppression components with high safety require a long creepage distance. In the international standard "IEC60664-1" (3), the creepage distance required for a battery of more than 400 volts is 2.8mm, while that of more than 800 volts needs to be extended to 5.6mm. However, until now, it has been difficult to extend the creepage distance while ensuring safety under high-voltage loads, and other types of capacitors such as film capacitors or large single-layer capacitors have been used as substitutes in order to comply with the standards.


(3) International standard "IEC60664-1": An international standard that specifies requirements for equipment space distances, creepage distances, and individual insulation.


The "EVA series" realizes the hitherto unattainable while maintaining the advantages of high-precision, small and thin MLCCs by utilizing the high-safety, advanced MLCC technology and resin molding technology suitable for miniaturization that Murata has developed so far. 10mm long creepage distance. As a result, even the high voltage of over 800 volts expected to appear in EV-related equipment can be adequately handled.


In the future, Murata will continue to work hard to expand the product lineup to meet market needs and contribute to the high performance and high functionality of automobiles.

ABOUT EGchip

main specialty


• Support the safety level required in the international standard: Ensure that the creepage distance and space distance are both up to 10mm. Supports Y2 class specified in IEC60384-14.

• Surface mount and reflow possible: By applying reflow processing, the productivity of the manufacturing process can be improved and the thickness can be reduced.

• High strength: By equipping the metal terminal, the terminal acts as a spring, thus improving the resistance against welding cracks and bending cracks.


main specifications


product name


EVA series


size


12.7×6.0×3.7mm (outward curved type), 8.4×6.0×3.7mm (inward curved type)


Creepage distance


10mm or more (for outwardly curved type), 6mm or more (for inwardly curved type)


Rated voltage


AC305V / DC1500V (Safety Standard: Conforms to UL/c-UL, ENEC (VDE))


withstand voltage


AC2000V (60 seconds) / DC4000V (60 seconds)


Operating temperature range


-55~125℃


temperature characteristics


U2J (7U)


Substrate bending resistance


5mm (60 seconds) [Meet the reliability test standard of automotive passive components: AEC-Q200 (meet 3mm requirements)]


capacity range


0.1~4.7nF ±10%


Insulation resistance (min)


10000MΩ


Operating range temperature


-55~125℃


The main purpose


On-board charger (OBC), EV motor drive inverter, DC-DC converter, wireless power supply system (WPT), battery management system (BMS), high-voltage drive on-board equipment such as compressors and pumps, etc.


product site


Refer to the details of the EVA series here


consult


Inquire about "EVA Series" here


About Murata Manufacturing Co., Ltd.


Murata Manufacturing Co., Ltd. is a global integrated electronic components manufacturer mainly engaged in the development, production and sales of ceramic-based electronic components. We are committed to creating unique products and contributing to the development of the electronic society through the technological foundation of material development, process development, product design, production technology, software and analysis and evaluation that support them through our own development.