• EV Tech Insider
  • Posts
  • TDK expands multilayer capacitor lineup with new state-of-the-art, low-resistance soft termination types

TDK expands multilayer capacitor lineup with new state-of-the-art, low-resistance soft termination types

October 11, 2023

– TDK Corporation has expanded its line of multilayer ceramic capacitors (MLCCs) with a unique design and structure that reduces electrical resistance and increases reliability.– The new MLCCs offer higher capacitance, reducing the number of parts and size while being compliant with automotive and commercial grades.

TDK Corporation has introduced an expansion to its CN series of multilayer ceramic capacitors (MLCCs). The new design is unique, featuring resin layers covering only the board mounting side which allows electric current to pass outside the layers. This results in reduced electrical resistance.

The soft termination product with this structure is an industry first. Accompanying the CN series are CNA series (automotive grade) and CNC series (commercial grade) products, addressing the market’s need for large-value capacitances.

The new MLCCs offer up to 22 ㎌ in 3216 size (3.2 × 1.6 × 1.6 ㎜ – L x W x T) and 47 ㎌ in 3225 size (3.2 × 2.5 × 2.5 ㎜ – L x W x T) with low-resistance soft termination. This translates to higher capacitances than conventional products, helping reduce the number of parts and size.

Soft termination prevents short circuits in power and battery lines. However, it typically has slightly higher terminal electrode resistance, making it crucial to keep the resistance low to reduce loss. The automotive grade CNA series are AEC-Q200 compliant.

Mass production began in September 2023. These products build upon the CN series originally released in September of 2021, addressing the continuing need for higher capacitance.

The new MLCCs are suitable for smoothing and decoupling of power lines for electronic control units (ECU) for automobiles and industrial robots. They offer high reliability, compliance with AEC-Q200, and enable space-saving designs and a reduction in the number of components due to higher capacitances.

This advancement in MLCCs by TDK Corporation will impact the electric vehicle industry by providing high-capacity, low-resistance components that ensure better performance and greater reliability.