Schaumburg, Ill. Taiyo Yuden (U.S.A.) Inc. expands its high-performance
multilayer ceramic capacitor (MLCC) offering with the WK series, which doubles the capacitance ratings over previous devices thanks to several design changes including reverse-geometry terminations, thin layering and narrow-pitch terminal electrodes.
The nine models in the WK series use "reverse geometry" terminations and other design improvements to provide high performance relative to device size. For example, the WK series' maximum capacitance values are 0.47 uF, 4.7 uF and 10 uF in the 0402, 0603 and 0805 case sizes, respectively. These ratings represent nearly a two-fold performance improvement over the company's previous devices of equal size.
In addition, the WK series is said to include the industry's smallest low equivalent series inductance (ESL) devices (now in a 0402 package) and the industry's highest capacitance values for both 0603 and 0805. Available voltage ratings are 4 V for the 0402 and 0603 devices; 6.3 V for the 0603 and 0805, and 16 V for the 0805.
The reverse-geometry MLCCs provide reversed length-to-width ratios. The company said by forming the electrodes on the long dimension of the device, instead of end-wise, it widens and shortens the current path between terminations, which reduces inductance and resistance - key benefits for decoupling circuits.
Here are the WK series part numbers and specifications.
Notes: 1. 0603 device thickness, these models: 0.5 mm; otherwise 0.8 mm
2. Capacitance change, all part numbers: ±22%
3. Temperature range, all part numbers: -55°C to 105° C
Pricing in OEM quantities is $0.15 for the 0402 WK series capacitor; $0.20 for the 0603 device, and $0.30 for the 0805 device. Delivery is two to four weeks.
Taiyo Yuden, 1-847-925-0888, www.yuden.us