Search Symmetry

Close
  1. Home
  2. Symmetry Blog
  3. Murata introduces metal terminal type MLCC

From Murata: Murata introduces metal terminal type MLCC for wireless power transfer equipment in automotive and general-purpose applications

Symmetry Electronics Team in Blogs on October 26, 2019

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.

Murata Manufacturing Co. Ltd. has introduced the KCM series of metal terminal type multilayer ceramic capacitors with temperature compensating C0G characteristics for automotive applications and the KRM series of metal terminal type multilayer ceramic capacitors for general-purpose applications. These products are primarily intended for the LC resonance circuits of wireless power transfer (WPT*1) systems for electric vehicle and industrial equipment. Mass production of this product is scheduled to start from August 2019.


Supplementary notes

Wireless power transfer (WPT) technology is being developed and practically applied in fields such as electric vehicles and industrial automated transporters. Wireless power supplies using the magnetic resonance method are attracting attention in these fields as they are resistant to drops in transfer efficiency due to distance. The magnetic resonance method inserts capacitors to both the power transmission side and power reception side to form a LC resonance circuit. Comparatively high power on the order of several kW to several tens of kW is applied to these resonance capacitors, so low loss, low heat generation, and low capacitance variation due to temperature and voltage are required.
Ceramic materials with low loss and low capacitance variation due to temperature and voltage application were selected for the newly developed metal terminal type multilayer ceramic capacitors with C0G characteristics. The metal pins also use low-loss materials and have been optimized for resonance capacitors.


Product overview

 

for Automotive

(Product lineup)

for General

(Product lineup)

Part number (example)KCM55V5C2J543JDL2#KRM55V5C2J543JDL2#
Shape
Length L6.1 ±0.4 mm
Width W5.1±0.3 mm
Thickness T6.2 ±0.4 mm
Metal terminal width e0.9 ±0.2 mm


Line up

  • Operating temperature range: -55°C to +125°C
  • Rated voltage: 630Vdc
  • Capacitance: 15nF to 54nF
  • Temperature characteristic: C0G characteristics(0±30ppm/℃)

 

Explanation of terms

  1. WPT: Wireless Power Transfer/Transmission (WPT) is the general term for wireless power supply, wireless power transfer/transmission, contactless power transmission, etc.


Looking to integrate Murata products with your design? Our Applications Engineers offer free design and technical help for your latest designs. Contact us today!

Share

Symmetry Electronics Team in Blogs on October 26, 2019

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.

Why partner with Symmetry Electronics? Symmetry's technical staff is specially trained by our suppliers to provide a comprehensive level of technical support. Our in-house Applications Engineers provide free design services to help customers early in the design cycle, providing solutions to save them time, money and frustration. Contact Symmetry for more information.

Browse

See all tags

Subscribe

Stay up to date with industry and supplier news!