500V and 700V PLZT Capacitors for Use with GaN and SiC

TDK Corporation today announced they have added new extended range capacitors to their CeraLink™ PLZT ceramic (lead lanthanum zirconate titanate) capacitor line of products. The announcement was made at the electronica 2016 trade show in Munich, Germany. The low profile (LP) types of CeraLink capacitors for SMD soldering are now available with a voltage of 500V and a capacitance of 1µF, or with 700V and 0.5µF.

The capacitors are characterized by their extreme volume efficiency and compactness. The dimensions of the variants with L-style terminal, for example, are 10.84mm x 7.85mm x 4mm. Thanks to the compactness and the permissible maximum temperature of 150 degrees C, these capacitors can, for example, be embedded as snubber capacitors directly into IGBT modules.

The new types of CeraLink capacitors with J-style terminal have an even more compact design, with dimensions of 7.14mm x 7.85mm x 4mm. One great advantage of the CeraLink LP types is their extremely low ESL of just 2.5nH.

The CeraLink solder-pin (SP) type is available for higher capacitance values of 20µF and 10µF for the rated voltages of 500V and 700V, respectively. This type has a very low ESL of 3.5nH.

Thanks to their low parasitic effects, CeraLink capacitors are well-suited suitable for converter topologies on the basis of fast-switching semiconductors such as GaN or SiC. Voltage overshoots and ringing when switching are significantly lower than with conventional capacitor technologies. Special requirements in terms of size, current capability and temperature resistance can also be accommodated very easily with CeraLink capacitors.