Compact and efficient dc-links have become practical thanks partly to ceramic capacitor designs that excel at thermal stability and feature low parasitic inductance. Matt Reynolds, EPCOS, a TDK Group Company The technology behind capacitors has been around since late 1745 when a German physicist found that an electrical charge could be stored by connecting a […]
Capacitors
What engineering school doesn’t teach
about electrolytic capacitors
Why are electrolytic capacitors such a pain? Several reasons come to mind, but the A-#1, everybody’s-favorite is (or should be): reliability. In many product types, electrolytic caps exhibit field-failure rates that top the list of component-caused system failure. For example, a survey of system failure analyses presented by NIC Components concluded that capacitors accounted for […]
Multilayer Ceramic Capacitors are RoHS, REACH, and AEC-Q200 compliant
KEMET, a leading global supplier of electronic components, today announced the expansion of its Goldmax and Aximax leaded Multilayer Ceramic Capacitor (MLCC) product line to include 100% RoHS, REACH and AEC-Q200 compliant offerings. These radial and axial components feature industry-leading voltage ranges, rendering them ideal for the automotive market. Automotive grade Goldmax and Aximax capacitors are […]
Aluminum electrolytic capacitors use snap-in design
TDK Corporation announced compact versions within the B43640 and B43644 series of aluminum electrolytic capacitors with a snap-in design for rated voltages of 400 V and 450 V. In comparison with the previous versions they are up to 15 percent more compact. All types are suitable for a maximum operating temperature of 105 °C. All […]
450-Vac film caps house two capacitors in one aluminum enclosure
TDK Corporation presents two new series of robust EPCOS alternating current (AC) capacitors. Both the cans and the tops of the components are constructed of aluminum, making them particularly robust. All capacitors in the B33331* and B33335* series are CE-compliant, have both VDE approval in accordance with EN/IEC 60252-1 Class A and UL approval. Thanks […]
How to select input capacitors for a buck converter
by Maniing Xie, System Application Engineer, Power Design Systems, Texas Instruments Electromagnetic interference (EMI) can create serious issues for manufacturers in an industrial environment. A buck converter generates a pulsating ripple current with high di/dt at the input. Without input capacitors, ripple current is supplied by the upper power source. Printed circuit board (PCB) resistance […]
DC link capacitor for IGBT modules
TDK Corporation presents a new EPCOS DC link capacitor that has been specifically designed for the HybridPACK™ 1-DC6 IGBT module from Infineon Technologies. The outstanding features of this component are the six busbar terminals with dimensions that are matched precisely to fit the IGBT module. This multiple contacting produces an excellent current capability while at […]
Pulse-Discharge Multilayer Ceramic Capacitors up to 150 nF handle 3.5 kV
KEMET has enhanced its high temperature and high voltage capabilities by adding Pulse Discharge Multilayer Ceramic Capacitors. This 200-degree Celsius series delivers reliable short-duration pulse generation in harsh environments typically associated with munitions and down-hole detonation circuitry. KEMET’s patented high reliability base metal electrode dielectric system is 100% Pb-free, RoHS compliant and REACH compliant without […]
High-power capacitors for power factor correction handle 230 to 690 Vac
TDK Corporation presents EPCOS PhaseCap Energy – two new series of high power capacitors for power factor correction. These components are available with gas or resin-filled housings. They are designed for voltages of 230 V AC to 690 V AC and offer a reactive power of between 5 kvar and 33 kvar. The life expectancy of […]
High-voltage film caps target DC filtering
AVX Corporation has released a new, high-voltage series of dry, medium-power film capacitors especially designed for DC filtering applications, such as the DC filtering of high frequency ripple currents and decoupling DC links in AC/AC and DC/AC motor drive inverters. Rated for 1.5kV to 3kV, the new FFLI Series capacitors are comprised of a unique […]
