Metal lead-frame MLCCs for automotive power trains

“To meet these needs, TDK developed the CA series, the largest MLCCs in the industry [6 x 5.6 x 6.4mm] with a metal frame and three-line type structure,” according to the company. The line-up includes “99nF 1,000V with a Class 1 dielectric, and 47μF 100V with a Class 2 dielectric.” Qualification is “based on AEC-Q200”.

I also claims low ESR (equivalent series resistance) – taking the examples above, the 6 x 8.4 x 6.4 COG dielectric 99nF 1,000V part scores 1.6mΩ at 100kHz, and the 6 x 7.5 x 6.4 X7R dielectric 47μF 100V comes in at 2mΩ.

The on-line product pages (list below) include interactive graphs if ESR values at other frequencies are needed.

These are both three-chip parts (see photo), with three MLCCs connected in parallel by metal frames that also act as solder terminals and structures to absorb relative movement between the capacitor and PCB. There are also two chip parts (photo).

For a complete list of values and sizes, scroll down to the table below.

Applications are foreseen smoothing and decoupling power lines, in resonant circuits and in snu

bbers.