Wima's DC-Link MKP 4 capacitors are available with capacitances of 5 μF up to 75 μF and voltages of 450, 700, 900 and 1100 V d.c. They are constructed with a winding element of metallised polypropylene film boxed in a plastic case with self-extinguishing epoxy resin sealing.
These new capacitors are designed for use in DC Link applications in power electronics and are outstanding due to their high rated voltage per component, low dissipation factor (ESR) and very high insulation resistance. Due to their construction they are entirely self-healing in cases of breakdown and exhibit a high life-expectancy. The unpolarised contact configurations, in 4-lead version or with screw-on terminal lugs, guarantee safe contacts even at high current loads.
DC Link capacitors with plastic film dielectric are steadily replacing traditionally used electrolytic capacitors due to more severe electrical requirements in the DC intermediate circuit, such as increased voltages or increased AC converter switching frequencies. As an example, for physical reasons electrolytic capacitors can only be rated up to approximately 500 V d.c. Moreover, due to the high ESR of electrolytics, the AC current load at high frequencies leads to considerable dissipation/self-heating and thus severely limits the permissible current carrying capability.
Tiny buck-boost converters 25 November 2019, Avnet South Africa
, Power Electronics / Power Management
Texas Instruments introduced a family of four high-efficiency, low-quiescent-current (IQ) buck-boost converters that feature tiny packaging with minimal external components for a small solution size. ...
Read more...Low-profile aluminium electrolytic capacitors 25 November 2019, TRX Electronics
, Passive Components
At 2 and 3 mm thin, Cornell Dubilier’s ULP series offers high energy density in a low-profile aluminium electrolytic capacitor. Designed specifically for applications requiring bulk capacitance and the ...
Read more...Robust DC link capacitors 25 November 2019, Electrocomp
, Passive Components
TDK’s new B2568* series of EPCOS MKP DC link power capacitors offer high robustness under harsh environmental conditions. The new capacitors are designed for voltages of between 900 and 3000 V d.c. and ...
Read more...Ultra-small LDO linear regulator 25 November 2019, Avnet South Africa
, Power Electronics / Power Management
Texas Instruments introduced an ultra-low-power low-dropout (LDO) linear voltage regulator with what it claims is the industry’s lowest quiescent current (IQ) of sub-25 nA. The new regulator features ...
Read more...AC film capacitors 25 November 2019, Electrocomp
, Passive Components
The B3237x FilterCaps MKD range of EPCOS AC film capacitors from TDK offer a 200 to 1000 VRMS voltage range, a 2475 V d.c. maximum voltage rating, and a ±5% tolerance. The B3237x series is available in ...
Read more...Radiation-tolerant PolarFire FPGA 23 October 2019, Avnet South Africa
, Programmable Logic
Developers of spacecraft electronics use radiation-tolerant (RT) field programmable gate arrays (FPGAs) to create on-board systems that meet the demanding performance needs of future space missions, survive ...
Read more...Radiation-tolerant PolarFire FPGA 25 November 2019, Avnet South Africa
, Programmable Logic
Developers of spacecraft electronics use radiation-tolerant (RT) field programmable gate arrays (FPGAs) to create on-board systems that meet the demanding performance needs of future space missions, survive ...
Read more...Design considerations for powering remote Bluetooth beacons 25 November 2019, Avnet South Africa
, Power Electronics / Power Management, Editor's Choice
One of the most exciting low-power wireless technologies to emerge in the last couple of years is Bluetooth beacon technology, which involves placing small electronic beacon devices at points of interest that broadcast packets of information via Bluetooth low energy to the smartphones of passers-by.
Read more...Bluetooth 5.0 audio IC and module 25 November 2019, Avnet South Africa
, Telecoms, Datacoms, Wireless, IoT
To help Bluetooth speaker and headphone manufacturers maintain product differentiation in the competitive wireless audio market, Microchip Technology released the next generation of its Bluetooth 5.0-qualified ...
Read more...High-power chip resistors 25 November 2019, TRX Electronics
, Passive Components
Panasonic has released a line of resistors to help engineers produce cheaper, smaller and more efficient designs. The legacy resistors of the ERJ series have been made smaller while handling the same ...
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