TDK Corporation announces the MLD2012 series of multilayer inductors for automotive power circuits. The new components that are based on a ferrite core are available in a compact IEC 2012 (EIA 0805) package with a footprint of 2.0 mm x 1.25 mm and an insertion height of just 0.5 mm. The power inductors, which are qualified to AEC-Q200, offer inductance values ranging from 0.47 … [Read more...]
New Low-Profile EMI/RFI Shielding Gasket With Clip-On Mounting Provides High Attenuation
Plymouth, MA - Tech-Etch has introduced a new EMI/RFI shielding low-profile, clip-on gasket with part number 125G23C040. The gasket profile has a free height of just .030" to close very small gaps and is available in any full-finger length up to 16.00" and all plating finishes. Beryllium copper's mechanical and electrical properties make it the ideal material for EMI/RFI … [Read more...]
Proposed Changes to CISPR SC I Standards
Are you familiar with CISPR 32 and CISPR 35? CISPR 32 was originally published in 2012, followed by a pair of corrigenda and then the 2nd edition was published in 2015. CISPR 32 replaced CISPR 13 (Broadcast receivers emissions) and CISPR 22 (ITE emissions). In the EU CISPR 32 is published as EN 55032 and it has superseded EN 55013 and EN 55022. By now you should all be … [Read more...]
Review of the EMC Filters Kit from Würth Elektronik
Some weeks ago I received one unit of the EMC-Filter kit from Würth Elektronik (Order Code: 744998), a very nice and useful kit for industry and academia (Fig. 1). Fig. 1. The EMC-Filter kit from Würth Elektronik (Order Code: 744998) If you are interested in filtering conducted emissions, this is a great kit for evaluation of components and topologies in both differential … [Read more...]
Film Capacitors: Ultra-Compact DC Link Solution
TDK Corporation presents an extremely compact EPCOS film capacitor for the DC link of inverters. With dimensions of just 40 mm x 58 mm (d x l) it offers a rated voltage of 350 V DC and a capacitance of 65 μF. This means that the capacitor, which has the order number B32320I2656J011, has a very high capacitance density of 0.9 μF/cm3 and offers up to 50 percent more capacitance … [Read more...]
Fair-Rite Announces 80 Material
Introducing Fair-Rite’s new 80-material, the latest addition to our High Frequency Power Magnetics line! This Manganese-Zinc ferrite has been tuned to operate in SiC and GaN switching power supplies with a stable temperature response for designs up to 5 MHz! Find out more about our new 80-material by clicking the link … [Read more...]
Measuring Cable Resonance with a Comb Generator
by Kenneth Wyatt Cables are one of the key metallic structures on a product that can act as an antenna and couple energy, causing radiated emissions and possible compliance test failures. This has been discussed extensively in the literature on product design for EMI compliance. In many cases, they can resonate at their half-wave frequency and actually amplify any harmonic … [Read more...]
Welcome to Mega Automotive
by Joanna Hill Today is Arnold’s first day at Mega Automotive. He is fresh out of college with an electrical engineering degree and is eager to meet his new boss, Mr. Buttsworth. Mr. Buttsworth: Hello Arnold welcome to Mega Automotive. I’m sure you’re going to like it here. It’s a fast-paced environment with lots to learn and loads of good people to work … [Read more...]
DC-DC Converter Noise Evaluation
By Kenneth Wyatt, Wyatt Technical Services LLCMore of my clients are starting to use small third-party DC-DC converters to provide the multitude of voltages required for today’s processor and DDR RAM ICs. While these are convenient to drop onto a circuit board, they can be quite a source of radiated and conducted emissions – especially those that switch in the MHz range.I … [Read more...]
Britain after Brexit, with the accent on EMC
Editor's Note (Updated June 27, 2016): Britain has voted to leave the European Union, a monumental decision that’s triggering some serious alarm bells throughout the country. As it stands, many UK laws and regulations are determined by EU legislation and it’s not immediately clear what the EMC standards ramifications in Britain will be during the two year … [Read more...]
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