The PDLF series of surface mount data line filters from Coilcraft eliminates the problem of conducted EMI in data line applications. They provide exceptional common-mode noise attenuation from 15 MHz to 300 MHz while passing signal line data below 300 MHz with minimal attenuation. These low resistance filters have been crafted for excellent electrical isolation (300 Vrms), … [Read more...]
Expanded Inlet Filter Series Boasts Added Attenuation
The FN9233 inlet filter series from Schaffner EMC now includes the new FN9233E that features an earth line choke with approximately 6 dB more attenuation compared earlier devices. With a high symmetrical and asymmetrical performance, the FN9233E was developed for devices and switching power supply units that require a high level of interference suppression such as in … [Read more...]
Clamp Filter Provides EMI Countermeasure for Automotive Electronics
The new ZCAT08V-BK and ZCAT12V-BK from TDK Corporation are being introduced as the industry's first automotive clamp filters suitable for use as a countermeasure for the effects of electronic noise on the cables that link a vehicle's various onboard ECUs. These filters are characterized by a unique structure consisting of a vertically split cylindrical ferrite core with an … [Read more...]
EMI Chip Device Targets Demanding Automotive Applications
The X2Y Integrated Passive Component from Syfer Technologies is a 3-terminal EMI chip device. It has been crafted to provide simultaneous line-to-line ground filtering using a single ceramic chip. Both differential and common mode filtering are provided by this one device. It can replace two or more conventional devices and is well suited to balanced lines, twisted pairs, and … [Read more...]
Aluminum Capacitors Offer Compact Design Solution
The new B43305 and B43508 series from EPCOS are snap-in aluminum electrolytic capacitors that offer converter solutions along with significant space savings. They feature the same electrical properties as earlier versions, but are smaller by up to two case sizes--corresponding to a height reduction of up to 5 and 10 mm, respectively. The B43305 series covers the capacitance … [Read more...]
Fundamentals of EMC Design: Our Products Are Trying To Help Us
INTRODUCTION We often design electronic products only to find that when we test them for electromagnetic compatibility (EMC), their emissions and/or immunity are not as good as we need them to be. Usually, at this time, we feel as if we are fighting against the laws of physics to contain the conducted and radiated emissions, or to reduce susceptibility. But in fact the laws of … [Read more...]
2012 EMC Directory & Design Guide
A New Look and Feel for the EMC Buyers' Guide Every year, Interference Technology publishes an EMC Buyers’ Guide — our most up-to-date look at the providers of more than 200 EMC-related products and services. Click here to Download. IN THIS ISSUE The HF Current Probe: Theory and Application Kenneth Wyatt, Wyatt Technical Services The Urgent Need to Integrate EMC … [Read more...]
Semiconductor Devices Filter Standard
IEC 62047-7:2011 describes terms, definition, symbols, configurations, and test methods that can be used to evaluate and determine the performance characteristics of BAW resonator, filter, and duplexer devices as radio frequency control and selection devices. This standard specifies the methods of tests and general requirements for BAW resonator, filter, and duplexer devices of … [Read more...]
Integrated Design Changes Military Connectors
To meet the prerequisites of commercial aviation with customers like Airbus, Boeing and Dassault, interconnect solutions need to provide full system integration with engine control systems, radar facilities, power distribution networks, in-flight entertainment, wing and engine ice protection mechanisms as well as landing gear and braking control systems. In this context, … [Read more...]
Eliminating the Need for Exclusions Zones in Nuclear Power Stations
Utilities operating nuclear power plants have been dealing with electromagnetic interference (EMI) problems for over two decades. Many early problems that affected the operation of instrumentation and control (I&C) equipment in plants stemmed from the use of wireless transmission devices (WTDs) (e.g., radio walkie-talkies, cellular phones, etc) inside the plant in the … [Read more...]
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