Technical Library | 2009-12-09 19:47:15.0
For the mobile market some PCB assemblies have been converted to flex circuit assemblies, in part because flex circuit assembly can be twisted or bent per the application needs. Flex circuits offer the same advantages as conventional printed circuit boards: quality, reliability, and high density.
Technical Library | 2011-04-21 18:55:48.0
Switching systems, and in particular matrices are a key part of many tests systems, they allow a single core set of test equipment to be connected to the UUT, saving the cost of duplicating test equipment. That places the switching matrix in a very vulner
Technical Library | 2011-05-05 16:17:34.0
Passives account for a very large part of today’s electronic assemblies. This is particularly true for digital products such as cellular phones, camcorders, and computers. Market pressures for new products with more features, smaller size and lower cost v
Technical Library | 2011-06-09 13:29:17.0
Flatness measurement of electronic parts and assemblies, or PCB’s, has become increasingly critical as geometries become smaller: finer pitches, smaller solder ball volumes, thinner substrates, etc. Additionally, processing temperatures vary and can pla
Technical Library | 2011-06-09 20:28:30.0
QFN Description: A QFN package is a QUAD-FLAT-NO LEAD device. This package is small and lightweight and has no leads (unlike a gull wing or J-leaded device). QFN’s have a thermal pad (paddle) on the bottom side of the part that offers heat dissipation and
Technical Library | 2012-02-23 21:16:28.0
Installed for the first time 20 years ago, Automated Optical Inspection (AOI) more recently has become an essential part of our SMT environment. Today, most process engineers are turning to machines as an inspection strategy for addressing quality and pro
Technical Library | 2021-12-31 06:09:47.0
The packaging method of surface mount components has become an important part of the SMT system. It directly affects the efficiency of assembly production and must be optimized in combination with the type and number of feeders of the SMT machine. There are four main types of packaging for surface mount components, Tape, tube, tray and bulk.
Technical Library | 2014-01-02 15:56:55.0
With ROHS compliance the transition to lead-free is inevitable. Several lead-free alloys are available in the market and its reliability has been the main concern. The results from this experimental research aims at making a comparison of different lead-free alloy combinations. Thermal shock and drop tests are a part of this experimental study.
Technical Library | 2021-02-04 01:56:56.0
In the present study, a model of closed-loop recycling of copper from PCBs is demonstrated, which involves the sequential application of bioleaching and electrowinning to selectively extract copper. This approach is proposed as part of the solution to resolve the challenging ... doi.org/10.1007/s12649-020-01128-9
Technical Library | 2019-01-03 21:34:41.0
With the increase of labor costs, the popularity of automated production lines, • Antistatic ic tubes, connector shipping tubes, power module shipping tubes, LED shipping tubes, relay shipping tubes and other electronic components tubes are also becoming more widely used. Many small companies blindly pursue low-priced packaging materials, and there is no requirement for quality. When it is later discovered that the parts are stuck in the packaging process, they will regret it when they crush the parts during transportation. Shenzhen Sewate Technology Co., Ltd. tells you about six ways to identify quality packaging tubes.
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