The CeraLink™ capacitor product range from TDK is a highly compact solution for the snubber and DC links of converters with special requirements with respect to space, temperature or ESL. E.g. they are ideal in connection with SiC or GaN based devices. These capacitors are based on the ceramic material PLZT (lead lanthanum zirconate titanate). In contrast to conventional ceramic capacitors, CeraLink has its maximum capacitance at the application voltage and due to their patented antiferroelectric capacitor technology, the capacitance of TDK CeraLink capacitors rises with increasing voltage.
Two designs are currently available: LP series (B58031*) - SMD low profile series with a capacitance of 1 µF and a rated voltage of 500 V DC, or 0,5µF and a rated voltage of 700V. click here to download the datasheet.
SP series (B58033*) - Solder-pin series with a capacitance of 20 µF and a rated voltage of 500 V DC, click here to download the datasheet.
Both types offer extremely low ESL values of below 3.5 nH. The capacitors are designed for an operating temperature of -40°C to +150°C.
Thanks to their extremely low ESL and ESR properties, CeraLink capacitors can support higher switching frequencies and the use of lower-cost and more robust semiconductors. Furthermore, capacitor value, board space, magnetics, heat sink and so on can also be reduced significantly so that the total cost of solution (TCS) can typically be reduced by more than 40 percent.
A great advantage of the SMD low-profile CeraLink versions is that they can even be embedded in IGBT modules thanks to their compact dimensions. This results in a very low-inductance design, so that no significant overvoltages are produced when the semiconductors are switched.
Click here to view a video overview of the Ceralink capacitors from TDK
Outstanding ESR performance at high temperatures
Low leakage currents (isolation) aging degradation
A key parameter for power electronics is the self-discharging time constant and its temperature dependence. High values even at high temperatures minimize the risk of high temperature failure modes such as thermal runaway. Due to its structure, the ceramic material used in CeraLink capacitors is superior to that of existing ceramic systems and therefore outstanding aging properties can be expected.
High current rating both with and without cooling
This measurement was taken at +85°C ambient temperature. Due to the high thermal conductivity of the copper electrodes, CeraLink capacitors can be cooled very effectively. The permissible current is only limited by the device temperature. Even without forced cooling (no air flow, no heat sink) it is possible to apply several A/°F.
Key features and benefits
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Anglia are offering a FREE sample of the Ceralink capacitor from TDK, fill in the form below to register your interest.
FREE samples for UK and Ireland customers only, subject to availability.
TDK is leading the field in battery technology with CeraCharge, the world's first rechargeable solid-state SMD battery offering 1000 times the capacity of a capacitor in the same case size.
Anglia Components has been awarded TDK's European Distribution Award in silver in the Local Distributors category. This is the sixth time that Anglia has received an award, giving it the best track record amongst TDK's 18 local distributors.
Anglia Components, a UK and Ireland distributor for TDK and EPCOS products, today announced that it has received the TDK Silver Distribution Award for Outstanding Business Performance in 2016.