Industry News | 2021-08-13 12:16:35.0
CyberOptics® Corporation (NASDAQ: CYBE) will feature the WX3000™ metrology and inspection system with MRS™ sensor technology, and high-precision sensors for semiconductor tool set-up and diagnostics at the VirtualConnecting Heterogeneous Systems Summit Sept. 1-3, 2021.
Industry News | 2023-08-29 07:11:55.0
Indium Corporation® will showcase selections from its portfolio of proven products for thermal management and power electronics applications at SEMICON Taiwan, September 6‒8, in Taipei. In addition, Senior Area Technical Manager Jason Chou will deliver a presentation, The Lead-Free Materials Evolution in Power Die-Attach Soldering Applications, on September 7.
Technical Library | 2021-10-20 18:21:06.0
The solderability of the SAC305 alloy in contact with printed circuit boards (PCB) having different surface finishes was examined using the wetting balance method. The study was performed at a temperature of 260 _C on three types of PCBs covered with (1) hot air solder leveling (HASL LF), (2) electroless nickel immersion gold (ENIG), and (3) organic surface protectant (OSP), organic finish, all on Cu substrates and two types of fluxes (EF2202 and RF800). The results showed that the PCB substrate surface finish has a strong effect on the value of both the wetting time t0 and the contact angle h. The shortest wetting time was noted for the OSP finish (t0 = 0.6 s with EF2202 flux and t0 = 0.98 s with RF800 flux), while the ENIG finish showed the longest wetting time (t0 = 1.36 s with EF2202 flux and t0 = 1.55 s with RF800 flux). The h values calculated from the wetting balance tests were as follows: the lowest h of 45_ was formed on HASL LF (EF2202 flux), the highest h of 63_ was noted on the OSP finish, while on the ENIG finish, it was 58_ (EF2202 flux). After the solderability tests, the interface characterization of cross-sectional samples was performed by means of scanning electron microscopy coupled with energy dispersive spectroscopy.
Industry News | 2013-11-04 14:24:00.0
When the 20th productronica opens its gates in Munich in a few days, it will feature a multifaceted supporting program. The CEO Roundtable will allow leading executives from the commercial and scientific sectors to discuss the topic "Industry 4.0 - Opportunities and Challenges for a Competitive Production of Tomorrow". Among other things, the event will focus on the international exchange of ideas and information within the electronics production sector.
Industry News | 2016-12-12 05:28:06.0
The following webinars are available free online throughout 2017 and are organised by Bob Willis for NPL. A direct link is provided for each event to allow you to book online
Industry News | 2010-05-05 23:20:11.0
Niedernhall – PCB specialist Würth Elektronik once again demonstrates its competence in system solutions and customer support; now offering one-stop flex-rigid PCB solutions with ZIF contacts and custom designed ZIF connectors.
Industry News | 2010-08-09 15:22:28.0
“Following a very good start to fiscal 2010, we have now seen our operations continue their successful development in the second quarter, with our Adhesive Technologies and Cosmetics/Toiletries business sectors making a particularly strong contribution..."
Technical Library | 2020-08-27 01:22:45.0
Initially adopted internal specifications for acceptance of printed circuit boards (PCBs) used for wire bonding was that there were no nodules or scratches allowed on the wirebond pads when inspected under 20X magnification. The nodules and scratches were not defined by measurable dimensions and were considered to be unacceptable if there was any sign of a visual blemish on wire-bondable features. Analysis of the yield at a PCB manufacturer monitored monthly for over two years indicated that the target yield could not be achieved, and the main reasons for yield loss were due to nodules and scratches on the wirebonding pads. The PCB manufacturer attempted to eliminate nodules and scratches. First, a light-scrubbing step was added after electroless copper plating to remove any co-deposited fine particles that acted as a seed for nodules at the time of copper plating. Then, the electrolytic copper plating tank was emptied, fully cleaned, and filtered to eliminate the possibility of co-deposited particles in the electroplating process. Both actions greatly reduced the density of the nodules but did not fully eliminate them. Even though there was only one nodule on any wire-bonding pad, the board was still considered a reject. To reduce scratches on wirebonding pads, the PCB manufacturer utilized foam trays after routing the boards so that they did not make direct contact with other boards. This action significantly reduced the scratches on wire-bonding pads, even though some isolated scratches still appeared from time to time, which caused the boards to be rejected. Even with these significant improvements, the target yield remained unachievable. Another approach was then taken to consider if wire bonding could be successfully performed over nodules and scratches and if there was a dimensional threshold where wire bonding could be successful. A gold ball bonding process called either stand-off-stitch bonding (SSB) or ball-stitch-on-ball bonding (BSOB) was used to determine the effects of nodules and scratches on wire bonds. The dimension of nodules, including height, and the size of scratches, including width, were measured before wire bonding. Wire bonding was then performed directly on various sizes of nodules and scratches on the bonding pad, and the evaluation of wire bonds was conducted using wire pull tests before and after reliability testing. Based on the results of the wire-bonding evaluation, the internal specification for nodules and scratches for wirebondable PCBs was modified to allow nodules and scratches with a certain height and a width limitation compared to initially adopted internal specifications of no nodules and no scratches. Such an approach resulted in improved yield at the PCB manufacturer.
Industry News | 2017-10-12 15:01:31.0
Viscom is pleased to announce plans to exhibit the 3D AOI system S3088 ultra gold and 3088 basic at SMTA Guadalajara Expo & Tech Forum, scheduled to take place Oct. 18-19, 2017 at Hotel Riu Guadalajara. Viscom will showcase its latest high-performance 3D AOI and SPI systems – S3088 series – along with a number of exciting new 3D imaging features and the new Viscom Open Interface 4.0.
Industry News | 2023-01-23 18:38:38.0
Heraeus Electronics returns to NEPCON Japan after two years of the pandemic. At the exhibition, which is scheduled to take place January 25-27, 2023, at The Tokyo Big Sight, Heraeus Electronics will bring a wide range of innovative materials to enhance power module and semiconductor device performance.
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