Lanškroun, November 30 2015
Czech and Slovak IMAPS chapter and European Passive Components Institute established partnership and co-operation to support Czech & Slovak electronic industry.
Q1: What is the technical advantage or innovation of the HaS company that everyone should know about ?
A: Customised component manufacturing services namely special termination forming.
Q2: What is the latest or hot product/service that worth everyone’s attention?
A: The most favorite service nowdays is a component tape & reel with 100% electrical screening option per customer request.
about the company
HaS Lanškroun s.r.o. company has been founded in 1990. The original manufacture of precision chip resistors extended gradually by further follow-up services for manufacturers of electronic products and electronic components. Domestic as well as foreign business partners of HaS Lanškroun s.r.o. appreciate modern technology, technological innovation and constant emphasis on quality and adaptation to customer needs. The main activities includes supplies of SMD resistors, SMD sensors, and power resistor, but also design and manufacture of machinery, measuring instruments and jigs for electronic and electrical production.
company website: www.hasdc.cz
source: ThomasNet article
November 27, 2015 – With power capability from 4–24 kW at +40°C, GRE2 Series is optimized for capacitor pre-charge and discharge, dynamic braking, load testing, and neutral grounding applications in locomotives/transit systems, harmonic filters, and renewable energy systems. Devices offer resistance range from 0.25–50 Ω, with tolerance of ±10% and inductance from 10–40 µH. Featuring welded construction with stainless steel plate element, ceramic insulators, and multiple taps, GRE2 series operates up to 400°C.
source: EDN article
Susan Nordyk -November 27, 2015
Precision foil wraparound chip resistors in the FRSG series from VPG Foil Resistors operate in harsh environments with temperatures of up to +225°C. The surface-mount devices have gold-plated terminals and provide a temperature coefficient of resistance of ±2.5 ppm/°C from -55°C to200°C, +25°C ref.
source: Energy Harvesting Journal article
posted on November 26, 2015
Using semi-conductive polymers, both analog and digital electronic circuits can be created inside living flowers, bushes and trees, as researchers at Linköping University Laboratory for Organic Electronics have shown. The results are being published in Science Advances.
source: Kemet article
Monday, October 26th, 2015
Before starting with KEMET, I had limited experience with Tantalum-based capacitors. Like many young engineers, I was taught to avoid them, but never really told why. As I learned more about tantalum capacitors, I found there was, and still is, much misinformation and many misconceptions about these capacitors.
Don’t let these 5 Tantalum Capacitor Myths hold you back from using them in your design.
Tantalum Capacitor Myth #1:
World Demand for Tantalum Exceeds available supply
This myth got a little bit of life back around 2000 because of a shortage of tantalum ore leading to a shortage of tantalum capacitors. At the time, there was only a single mine sourcing the ore. The cost to mine the ore because prohibitive, so the mining operation shut down tantalum mining.
The situation that occurred back in 2000 was an isolated incident because, since that time, multiple mines have opened in Brazil, Canada, China, and Africa. Some of these mines are the same “Hard Rock Mine” type from 2000. Others, like the primary source KEMET, uses today are considered “Artisanal” mines. These open pit mines are far less expensive to operate.
With multiple regions contributing a mixture of ore production costs, the price for ore remains competitive. Capacitor manufacturers, like KEMET, have established a conflict-free and and broader supply chain to prevent constraints on supply.
Tantalum Capacitor Myth #2:
The world is running out of Tantalum
The “world is running out” myth is related to the first one. Rumors have circulated saying that the total available ore is running low. Again, this was in part because when the capacitor shortage in 2000 occurred when only one mine was operating.
Today, rich veins of ore have been discovered throughout the world. The US Geological Survey Fact Sheet 2014-3054 published in June of 2014 estimates enough supply for the next 500 years.
In other words, no anticipated shortage in my lifetime, your lifetime, or your product’s life cycle!
Tantalum Capacitor Myth #3:
The only use of tantalum is capacitors
For most electrical engineers, the only time you hear about tantalum is in regards to capacitors. So this leads many of us to believe that is the only reason for mining the ore.
Tantalum has high biocompatibility, making it suitable for medical implants. However, mechanically it is not very strong, compared to other metals. For some medical applications, the stronger stainless steel will be coated with tantalum, providing high strength and biocompatibility. Examples of its usage are stints, bone replacements, suture clips, and wire.
The metal is relatively very inert, and that makes it useful to line pipes, tanks, and vessels in harsh environments or transporting corrosive materials.
Usage outside the electronics industry is critical because it keeps demand high. Again, from the USGS June-2014 report, capacitors only account for about half of the world’s tantalum production.
Tantalum Capacitor Myth #4:
No Safe Fail Mode for Tantalum Capacitors
It is true, most engineers have a story related to a tantalum capacitor “failing.” Sometimes with what we call “ignition mode.” (Of course, these stories can also apply to ceramic or aluminum capacitors, as well as other components too!)
What many engineers call “tantalum” or “solid tantalum” capacitors are an older technology. Like all capacitors, there are two electrodes separated by a dielectric. The anode plate is tantalum, the dielectric layer is Tantalum Pentoxide (Tao), and the Cathode plate is Manganese Dioxide (MnO)
Inside of a T495 – Tantalum MnO Capacitor
As it turns out, when the dielectric layer has a fault, allowing too much current to flow, each heat can be generated in the MnO layer allowing the MnO to ignite.
It is important to note that the MnO layer is the ignition layer and not the tantalum or its oxide. One way to achieve safe tantalum capacitors is to use an alternative cathode material.
Tantalum Capacitor Alternative Technology
There are two other cathode technologies used for Tantalum-based capacitors. A “wet” style with a wet electrolyte and a newer solid “polymer” cathode.
Tantalum capacitors made with polymer cathodes, also known as “polymers” or “polymer electrolytic,” do not ignite on failure. In fact, we’ve found them to be significantly more reliable when compared to their traditional MnO counterparts–meaning fewer failures.
We name our Polymer Tantalum “KO-CAP®” and they feature a polymer cathode with a benign (or safe) failure mode.
Tantalum Capacitor Myth #5:
Few applications use Tantalum Capacitors
Maybe it is just the name, but it seems pretty common to think that tantalum capacitors are only for high-end exotic applications.
The average person carries from as few as 10 and up to 50 tantalum capacitors every day. You only need to look at a laptop computer, tablet, or smartphone to find examples.
Beyond computing, we have customers in every major electronics segment using tantalum capacitors. Automotive manufacturers use them in infotainment systems, ADAS, tire pressure monitors, and in under-the-hood ECU. We have an example of an aerospace customer who found polymer / KO-CAP reliability plus volumetric efficiency to be a big advantage to their program. We also come across FPGA reference designs with KO-CAPs surrounding the FPGA for decoupling.
Historical misconceptions and myths have given tantalum and tantalum capacitors a bad rap. With these myths dispelled hopefully you can now start to use tantalum in your designs and take advantage of all the technological advantages of tantalum.
If you still have concerns or questions about using tantalum capacitors in your design, use the Contact Form below to get in touch with one of our Field Application Engineers. They can help you determine if there is an alternative or help you understand if there is any risk with your design.
source: ECN article
Tue, 11/24/2015 – 11:24am by Vishay Intertechnology
Vishay Intertechnology, Inc. introduced a new series of high-power, high-current grid resistors. Offering designers a convenient drop-in replacement for competing solutions, Vishay Milwaukee GRE2 devices, a product line of Vishay Dale Resistors, combine high power ratings to 24 kW and high operating temperatures to +400 °C with a robust design.
EPCI, Lanškroun, Czech Republic, 24th November
I add together a header note with some history pictures to the Museum Institute pages based on my story today. It will take some time to build the Museum pages, but at least … it is on the wish list ….
I was driving today to a meeting with one local company, lead by 72 years passive components veteran man that spent all his life on passive component manufacturing and services. I was captured in a moment by a thought that I am the generation that has to fulfill a mission to bridge this generation with new digital age. They are the generation of the industry pioneers, not the early pioneers of basic inventions, but the hands-on engineers that had moved the garage production to mass volume … and based on my manufacturing experience It is the real hard job ! … yield, ppm failures, quality standards, high speed contacting …etc. Knowledge is not transferable, you learn mostly what you do … and that was the generation that did it … our generation was partially hit, but now sitting and swiming in information flood behind computer is not the way to get the “true experience”, I am afraid. I wish we capture the knowledge somehow, use and conserve it for a moment and let it grow ….. that is why – here is the Institute project with its Museum pages.
I add the note to the Museum main page where you can see the pictures from “later pioneers” in gallery that I took back from this trip .
gallery and featured photo credit: HaS component museum
source: ECN article
Tue, 11/24/2015 – 9:58am by David L. Chandler, MIT News Office
The most widely used technology for producing X-rays – used in everything from medical and dental imaging, to testing for cracks in industrial materials – has remained essentially the same for more than a century. But based on a new analysis by researchers at MIT, that might potentially change in the next few years.
source: ECN article
Mon, 11/23/2015 – 8:27am by TT Electronics
TT Electronics launched a new range of surface mount (SMT) power inductors for high frequency and high temperature applications. Named the HA65A series, the inductors are designed to meet the requirements of the growing automotive market’s need for certified, high power inductors specifically for buck, boost or buck-boost power converter topologies for optimum voltage regulation at fast switching frequencies.