It addresses the demand for miniaturization without compromising on performance, the firm claims.
Kemet’s CAS series of SMD MLCCs offers important design and production benefits versus leaded disc devices for AC line filtering in this expanding market.
With a trend to increased functionality in smaller spaces, demand for portable solutions, the PCB real estate available for electronics, including power delivery systems, is shrinking. The CAS series is offered in case sizes of 1808, 1812, 2211 and 2220.
“Commonly used safety certified leaded disc components are bulky compared with Kemet’s CAS series SMD MLCCs and are therefore often not suitable for applications with restricted spaces in which filtering circuitry needs to be placed,” the company says.
“Leaded disc devices also require pin-through installation into PCBs, a process that is not compatible with standard automated reflow profiles and therefore can result in additional production costs.”
According to Kemet’s digital datasheet, the capacitors have a 250 VAC rating, support 2.5 kV and 5 kV impulse voltages and are compliant with IEC 60384-14.
They are available with C0G and X7R dielectrics in classes X1/Y2 and X2 with an operating temperature up to 125°C.
The devices are available in a capacitance range from 3.0pF to 22nF with tolerances from 0.5pF to 20%.
Filtering is important in mains powered products to manage unwanted transients such as high frequency noise in both line-to-line (class X) and line-to-ground (class Y) applications. Safety certified capacitors are used in applications such as power adapters for mobile devices, industrial power distribution, and electric vehicle power inverters.
Commenting on the release, Reggie Phillips, senior product manager, Kemet, says “Until now, safety certified capacitor technology has not kept pace with advances in MLCC technology. Our new CAS range allows engineers to place the essential mains-connected filtering capacitors into smaller spaces, thereby reducing board size.”