Heat-activated, anti-static cover tapes for component packaging offer superior bond performance, resistivity and adhesive integrity. WAFERTAPE products for wafer mounting, dicing and backgrinding insure consistent, precise, repeatable wafer yields.
Industry Directory | Manufacturer
Finetech manufactures innovative, high-accuracy equipment for leading-edge bonding, micro assembly and rework challenges.
ASYMTEK Quantum Q-6800 High-Value Fluid Dispensing System. ASYMTEK Quantum Q-6800 Series. A high-value fluid dispensing solution for demanding applications. Large dispense area (423 x 458 mm) for varied substrate sizes Supports CSP, BGA, and boa
The CRX-Series of real time, high resolution x-ray inspection systems for PCBs and components including BGAs, bond wire and flip chip, providing yield improvement solutions for the printed circuit board assembly and advanced semiconductor-packaging i
Electronics Forum | Wed Dec 28 21:18:12 EST 2005 | davef
You don't TS bond gold wire to nickel [of ENIG] for the same reason that you don't TS bond gold wire to hard gold. [Nickel or maybe cobalt is used to harden soft gold.] Together nickel and gold produce unreliable bonds. Look here: * http://www.smta.
Electronics Forum | Wed Apr 22 20:55:04 EDT 2020 | SMTA-Samy
The ideal cooling zone curve should be a mirror image of the reflow zone curve. The more closely this curve mimics the reverse of the reflow curve, the tighter the grain structure of the solder joint will be upon reaching its solid state, yielding a
Industry News | 2010-12-07 14:53:07.0
GPD Global announces that its Positive Cavity Displacement (PCD) technology is proven with silver-filled electrically and thermally conductive adhesives.
Industry News | 2011-09-06 15:20:36.0
SMTA China announced the Best Paper/Presentation and Best Exhibit Awards at its annual awards presentation held in conjunction with SMTA China and Hong Kong Chapter Breakfast Reception, which took place August 31, 2011 at the Ritz-Carlton Hotel in Shenzhen.
Parts & Supplies | Pick and Place/Feeders
The definition of SMT SMT is the surface assembly technology,surface mount technology(surface mount technology)(Surface Mounted Technology abbreviation),is currently the most popular electronic assembly industry,a technology and technology. What a
Technical Library | 2017-08-31 13:43:48.0
Wire bonded packages using conventional copper leadframe have been used in industry for quite some time. The growth of portable and wireless products is driving the miniaturization of packages resulting in the development of many types of thin form factor packages and cost effective assembly processes. Proper optimization of wire bond parameters and machine settings are essential for good yields. Wire bond process can generate a variety of defects such as lifted bond, cracked metallization, poor intermetallic etc. NSOP – non-stick on pad is a defect in wire bonding which can affect front end assembly yields. In this condition, the imprint of the bond is left on the bond pad without the wire being attached. NSOP failures are costly as the entire device is rejected if there is one such failure on any bond pad. The paper presents some of the failure modes observed and the efforts to address NSOP reduction
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.
Water-based, alkaline defluxing for semiconductor electronics HYDRON® SE 230A is a water-based, single-phase cleaning agent specifically developed for the use in dip tank processes. It removes flux residues from a wide range of semiconductor electro
NanoSlic™ Gold is our top of the line spray on coating applied to our UltraSlic™ solder paste stencil, which gives previously unseen performance benefits in transfer efficiency. The NanoSlic™ Gold coating also gives the benefits of improved under-ste
Events Calendar | Mon Apr 23 00:00:00 EDT 2018 - Thu Apr 26 00:00:00 EDT 2018 | Shanghai, China
SMTA China East Conference 2018
Events Calendar | Mon Aug 13 00:00:00 EDT 2018 - Wed Sep 12 00:00:00 EDT 2018 | ,
Improving dispensing yield
Career Center | Chennai, India | Sales/Marketing
Experience in sales of inter-connect, passive, active, and electro-mechanical components Product Engineering Role as handling BOM, ECO, ECN in the New product introduction of Philips LCD TV and Kulicke and Soffa wire bonding m/c Process and Quali
Career Center | Phoenix, Arizona | Engineering,Management,Production,Quality Control,Research and Development,Sales/Marketing,Technical Support
• Highly motivated, solution oriented professional with proven record synergizing scientific, engineering, and business administration backgrounds to drive and sustain customer satisfaction and long term improvements. • Articulate communicator that a
SMT Express, Volume 2, Issue No. 9 - from SMTnet.com Volume 2, Issue No. 9 Thursday, September 14, 2000 Featured Article Return to Front Page Book Review Reviewed by Dave Fish (davef ), Pandion Electronics, Inc Title: Wire Bonding
SMTnet Express, August 31, 2017, Subscribers: 30,770, Companies: 10,706, Users: 23,739 NSOP Reduction for QFN RFIC Packages Mumtaz Y. Bora; Peregrine Semiconductor Wire bonded packages using conventional copper leadframe have been used in industry
KD Electronics Ltd. | http://www.kundasmt.com/?OTHER-EQP/5972.html
KOHYOUNG NUTEK OTHER PARTS CONTACT US welcome to KD Electronic OTHER EQP Product number:PVA DeltaBond Description: DeltaBondOPTICAL BONDINGOptical Bonding SeriesDelta Bond series equipment is suitable for all steps in the optical bonding process
Imagineering, Inc. | https://www.pcbnet.com/blog/everything-you-need-to-know-about-moisture-sensitive-devices-msds/
. Thankfully, steps can be taken to reduce the expenses that can be incurred with MSDs, allowing you to minimize the costs of ruined batches and lower yields
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