TDK Corporation Announces CeraLink(TM) Ceramic Capacitors Now Available With Higher Rated Voltage
March 23, 2017 at 08:00 am EDT
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TDK Corporation announced that it has expanded the company's CeraLink™ series of ceramic capacitors with two new low-profile (LP) types designed for a rated voltage of 900 V DC. The SMT capacitors have a capacitance of 0.25 µF and feature different terminations: the B58031I9254M062 type with L-style termination has dimensions of 10.84 mm x 7.85 mm x 4 mm, while the B58031U9254M062 with J-style termination measures only 7.14 mm x 7.85 mm x 4 mm. The new capacitors supplement the existing LP portfolio which until now has included types for 500 V DC (1 µF) and 700 V DC (0.5 µF). Thanks to their compact design and high permissible continuous operating temperature of 150 degrees C, all LP types can, for example, also be embedded directly into IGBT modules as snubber capacitors. Another advantage of the CeraLink capacitors based on PLZT (lead lanthanum zirconate titanate) ceramic is their extremely low ESR and ESL values. For example, these components feature a minimum ESR value of 12 m? and an ESL value of just 2.5 nH. These capacitors are therefore well suited to converter topologies based on fast-switching semiconductors such as GaN or SiC. Voltage overshoots and ringing when switching are significantly lower than with conventional capacitor technologies. Another feature of the LP types is the high steady state ripple current of up to 11.4 ARMS. If higher capacitances are required, CeraLink types with solder pin terminations are available. They are designed for rated voltages of 500 V or 700 V DC and offer capacitances of 20 µF (500 V DC) or 10 µF (700 V DC). The ESL value of these types is typically around 3.5 nH. Main applications: Fast-switching converters. Main features and benefits: Types available with rated voltages of 500 V DC, 700 V DC and now also 900 V DC; Extremely low ESR and ESL.
TDK Corporation specialises in the design, manufacture and sales of electronic products and recording equipment. Net sales break down by family product as follows:
- rechargeable batteries and energy converters (46.9%);
- electronic equipment and components (33.1%): ceramic capacitors, ferrites, magnets, inductors, high-frequency components, transformers, converters, thermistors, etc.;
- recording equipment (13.5%): recording appliances (notably magnetic heads for hard disks, heads for disk drives and thermal printer heads), recording equipment (audio and video cassettes, optical disks, computer data storage tapes, PC cards, etc.);
- other (3.5%): rechargeable batteries, memory cards, displays and mechatronic equipment.
Net sales break down geographically as follows: Japan (8%), China (56.8%), Asia (18.7%), Europe (10%) and Americas (6.5%).