MLCCs with Tin/Lead Termination for Defense and Avionics

KEMET Corporation announced the expansion of its KEMET Power Solutions (KPS) MLCC product line to include a tin/lead termination option. Available in EIA 1210 and 2220 cases sizes, KPS "L" termination commercial capacitors allow designers to meet the needs of defense, avionic and industrial applications requiring a more robust termination system that helps mitigate tin whisker growth.

KPS utilizes a proprietary lead-frame technology to vertically stack one or two MLCCs in a parallel circuit configuration in a single compact surface mount package. The attached lead-frame mechanically isolates the capacitors from the printed circuit board, offering advanced mechanical and thermal stress performance.

Isolation also addresses concerns for audible, microphonic noise that may occur when a bias voltage is applied. A two-chip stack offers up to double the capacitance in the same or smaller design footprint when compared to traditional surface mount MLCC devices.

Typical applications include smoothing circuits, dc-dc converters, power supplies, and noise reduction circuits with a direct battery or power source connection. KPS “L” capacitors are also suited for any application that is subject to high levels of board flexure or temperature cycling.