A Look at the Latest Capacitors From TDK, Kyocera, and Vishay
The new series include electrolytic, single layer ceramic, and multilayer ceramic capacitors for use in medical, aerospace, automotive, and industrial applications.
TDK Corporation, Kyocera AVX, and Vishay Intertechnology have all released new capacitor series designed to meet the demands of different applications. TDK’s B41699 and B41799 series of ultra-compact aluminum electrolytic capacitors are built for automotive applications, while Kyocera’s DSCC 25007 mini BME stacks are certified for use in military and aerospace applications. The VCC Class 1 series from Vishay are high voltage single layer ceramic disc capacitors suitable for medical and industrial devices.
The B41699 features an axial-lead design (left), while the B41799 features a solder star design (right). Image used courtesy of TDK
TDK’s Aluminum Electrolytic Capacitors
TDK has introduced the B41699 and B41799 series of aluminum electrolytic capacitors, specifically designed to withstand the rigors of modern automotive applications. These capacitors are engineered for high-temperature and high-vibration environments, crucial for powertrain modules like electric power steering, fan control, and transmission systems. A key feature of the B41699 and B41799 series is robustness, with an optional vibration stability rating of up to 60 g in accordance with IEC 60068-2-6.
The capacitors operate at temperatures up to 140 °C, enabling their use in locations close to heat-generating components within electric vehicles and other automotive platforms. The series offers rated voltages of 25 VDC and 35 VDC and provides a high capacitance and high ripple current solution in a compact footprint. This allows designers to potentially reduce the number of capacitors needed in their designs, contributing to a more space-efficient and lighter-weight system. The B41699 features an axial-lead design, while the B41799 uses a soldering star configuration, providing flexible mounting options for various PCB layouts.
Kyocera’s DSCC 25007 mini BME stacks are designed for use in military and aerospace applications. Image used courtesy of Kyocera
Kyocera’s DSCC 25007 Mini BME Stacks
Kyocera-AVX has released the new DSCC 25007 mini base metal electrodes (BME) stacks, a series of miniature, high-reliability stacked multilayer ceramic chip capacitors (MLCCs). These components are tailored for military and aerospace applications where size, weight, and reliability are critical design factors. The stacked capacitors are based on Kyocera’s MIL-PRF-32535 X7R capacitors and are manufactured in a DLA-approved, MIL-PRF-32535-qualified facility. This ensures full traceability and adherence to rigorous testing standards, including 100% Group A testing as standard.
The new capacitors are offered in a horizontal stack featuring two X7R MLCCs within an EIA 2220 package. This compact form factor offers space and weight savings. According to Kyocera, a new 100 V, 10 µF part is approximately 1/9th the weight and 1/6th the volume of its PME equivalent. This reduction in size and weight is particularly beneficial for applications like satellites, missiles, and military aircraft, where every gram and square millimeter of board space is valuable. The series operates from -55 °C to 125 °C with voltage ratings of 25 V, 50 V, and 100 V.
The MKP1848H is a single-layer ceramic disc capacitor designed for use in high-voltage devices in industrial and medical applications. Image used courtesy of Vishay
Vishay’s High Voltage Single Layer Ceramic Capacitors
Vishay has introduced a new series of Class 1 radial-leaded high voltage single layer ceramic disc capacitors, designed for industrial and medical applications. These capacitors are part of Vishay’s HVCC Class 1 series and have a low dissipation factor and a DC bias. This results in reduced power losses and reliability.
Vishay’s new capacitors are suitable for high-voltage generators used in medical and industrial X-ray systems, as well as equipment like baggage scanners, air purifiers, and pulsed lasers. The capacitance loss is less than 25% at 15 kV.
The new capacitors offer a capacitance range from 100 pF to 1 nF with standard tolerances of ± 10% and are rated for voltages up to 15 kVDC. The operating temperature range is -30 °C to 85 °C. The capacitors feature a silver-plated ceramic disc with tinned copper-clad steel leads and are encapsulated in a flame-resistant epoxy resin.
