Industry News | 2012-05-01 19:12:41.0
Nordson DAGE, a division of Nordson Corporation (NASDAQ: NDSN), will exhibit its 4000Plus Bondtester Pad Cratering Inspection System in Booth #212 at the upcoming Electronic Components and Technology Conference
Industry News | 2011-05-12 22:13:47.0
Nordson DAGE showcased its newly developed 4000Plus pad cratering inspection system at Nepcon Shanghai.
Industry News | 2011-09-06 15:27:12.0
Nordson DAGE, a division of Nordson Corporation (NASDAQ: NDSN) will highlight its 4000Plus multi-purpose bondtester in Booth F05 within the Singapore Pavillion at NEPCON Vietnam
Industry News | 2010-09-27 23:15:26.0
VJ Technologies, Inc., the leader in rework technologies and global provider of advanced X-ray inspection systems, announces that Intel’s James Wade and Raiyo Aspandiar, along with VJ Technologies’ Donald Naugler and Terry Leahy will present a paper titled “PCB Pad Site Dress Methods on BGA and Socket Pad Arrays” at the upcoming SMTA International, scheduled to take place October 24 - 28, 2010 at the Walt Disney World Swan and Dolphin Resort in Orlando, FL.
Industry News | 2011-11-20 13:14:27.0
Nordson DAGE has been awarded a Global Technology Award in the category of Test Equipment for its 4000Plus Bondtester Pad Cratering Inspection System.
Parts & Supplies | Circuit Board Assembly Products
PULANG TECHNOLOGY CO,.LTDOffers electronic manufacturing services including PCB designing, electronic contract manufacturing including electronic product design, electronic product development, electronic product repair, PCB manufacturing, electronic
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.
Technical Library | 2020-08-05 18:49:32.0
The evolution of internet-enabled mobile devices has driven innovation in the manufacturing and design of technology capable of high-frequency electronic signal transfer. Among the primary factors affecting the integrity of high-frequency signals is the surface finish applied on PCB copper pads – a need commonly met through the electroless nickel immersion gold process, ENIG. However, there are well-documented limitations of ENIG due to the presence of nickel, the properties of which result in an overall reduced performance in high-frequency data transfer rate for ENIG-applied electronics, compared to bare copper. An innovation over traditional ENIG is a nickel-less approach involving a special nano-engineered barrier designed to coat copper contacts, finished with an outermost gold layer. In this paper, assemblies involving this nickel-less novel surface finish have been subjected to extended thermal exposure, then intermetallics analyses, contact/sheet resistance comparison after every reflow cycle (up to 6 reflow cycles) to assess the prevention of copper atoms diffusion into gold layer, solder ball pull and shear tests to evaluate the aging and long-term reliability of solder joints, and insertion loss testing to gauge whether this surface finish can be used for high-frequency, high density interconnect (HDI) applications.
Industry Directory | Consultant / Service Provider / Manufacturer
EMS company Laser SMT stencils mfg Tape converting , slitting , die cut Laser modules mfg Distribution materials,components ISO 9001:2015 ISO 13485:2016 AQAP 2110:2016 EN 9120:2018
Industry News | 2021-12-22 20:27:56.0
The mass flow sensor, or air flow sensor is one of the important sensors of the electronic fuel injection engine. It is installed between the air filter and the intake hose to measure the intake volume of the engine cylinder and adjust the fuel ratio according to it. The mass flow sensor converts the inhaled air flow into electrical signals and sends them to the electronic control unit (ECU). As one of the basic signals to determine the fuel injection, it is a sensor that measures the air flow of the suction engine. So if you want to test it, how should you do? Let's start it.
