Continuation . . .

More Critical Larger Size Codes

The proportion of SMD technology has been increasing for many years. In accordance with the wishes of the users, ever stronger and larger components including types which had so far been unobtainable, have to be made available in SMD versions. In the field of capacitor technology this has led to developments in two directions.

On the one hand, following the demand for miniaturization, generations of smaller and smaller components were developed, down to size codes 0805/0603/0402. With regard to mechanical stability and the mechanical stress on the solder joint, these small components, due to their small mass and size, do not cause any special problems, however they do place increased demands on precision in insertion.

In this respect, the components in larger size codes from ca. 1812 and upwards are more critical. The greater mass and larger surface areas which increase with the size codes, lead to distinctly higher stress factors in practical applications.

Ceramic Capacitors in Large Size Codes

Ceramic capacitors are generally used in standard applications with values in the range of up to C < 0.1µF. The smaller capacitance values are covered by regular ceramic versions, the larger values by multi-layer ceramic MLCC. This generally results in size codes < 1812.

In order to be able to offer even higher capacitance and voltage ratings, the manufacturers of ceramic capacitors have also introduced larger size codes such as 1812 / 2220 / 2824/ (4030). For these, the spectrum of values goes right up to the µF range and to a voltage level of up to 1000 VDC.