Industry News | 2013-10-09 13:51:38.0
Count On Tools Inc. (COT) introduces its latest accessory Rail Removal Tools, for the award-winning StripFeeder .mod System for loading tape-and-reel components onto compact modules for prototyping and high-mix low-volume applications.
Industry News | 2018-12-08 03:15:55.0
SMT Book – Surface Mount Technology Book PDF
Industry News | 2018-12-08 03:17:14.0
SMT Book – Surface Mount Technology Book PDF
Industry News | 2015-10-21 11:40:16.0
GETECH is pleased to announce it has partnered with pb tec solutions in Germany and Austria to market and sell its range of depaneling and marking systems.
Technical Library | 2022-10-31 17:25:37.0
Mixed formulation solder alloys refer to specific combinations of Sn-37Pb and SAC305 (96.5Sn–3.0Ag–0.5Cu). They present a solution for the interim period before Pb-free electronic assemblies are universally accepted. In this work, the surfaces of mixed formulation solder alloys have been studied by in situ and real-time Auger electron spectroscopy as a function of temperature as the alloys are raised above the melting point. With increasing temperature, there is a growing fraction of low-level, bulk contaminants that segregate to the alloy surfaces. In particular, the amount of surface C is nearly _50–60 at. % C at the melting point. The segregating impurities inhibit solderability by providing a blocking layer to reaction between the alloy and substrate. A similar phenomenon has been observed over a wide range of (SAC and non-SAC) alloys synthesized by a variety of techniques. That solder alloy surfaces at melting have a radically different composition from the bulk uncovers a key variable that helps to explain the wide variability in contact angles reported in previous studies of wetting and adhesion. VC 2011 American Vacuum Society. [DOI: 10.1116/1.3584821]
Technical Library | 2015-08-13 15:52:40.0
Pad cratering has become more prevalent with the switch to lead free solders and lead free compatible laminates. This mainly is due to the use of higher reflow temperature, stiffer Pb-free solder alloys, and the more brittle Pb-free compatible laminates. However, pad cratering is difficult to detect by monitoring electric resistance since pad cratering initiates before an electrical failure occurs. Several methods have been developed to evaluate laminate materials' resistance to pad cratering. Pad-solder level tests include ball shear, ball pull and pin pull. The detailed methods for ball shear, ball pull, and pin pull testing are documented in an industry standard IPC-9708. Bansal, et al. proposed to use acoustic emission (AE) sensors to detect pad cratering during four-point bend test. Currently there is an industry-working group working on test guidelines for acoustic emission measurement during mechanical testing.
Technical Library | 2011-10-27 18:03:53.0
Leadless, near chip scale packages (LNCSP) like the quad flat pack no lead (QFN) are the fastest growing package types in the electronics industry today. Early LNCSPs were fairly straightforward components with small overall dimensions, a single outer row
Industry News | 2016-09-08 13:23:38.0
KYZEN, a global leader in environmentally responsible cleaning technologies, introduces a new line of solvent blends designed for high reliability in a wide spectrum of industrial cleaning applications. With critical focus on meeting increasing regulations and high quality output, KYZEN’s new solvents have affectionately been dubbed “green and clean,” by many in the industry.
Industry News | 2011-04-20 20:51:21.0
Kyzen announces that it has been awarded a 2011 NPI Award in the category of Cleaning Materials for its AQUANOX® A4705 Neutral pH Aqueous Cleaning Chemistry.
