New Equipment | Test Equipment
Metal dome (also named snap dome, tacticle domes) is the most improtant part of the switches. The metal domes are mainly use in the membrane switches, printed circuit boards, flexible circuit boards. The raw material is the thickness from 0.05mm to 0
New Equipment | Fabrication Services
Minimum line width/space: 4mils Surface finish: immersion gold Board thickness: 1.20MM Minimum drilled hole diameter: 8mils Copper thickness: 0.5oz Special process : 0.40MM BGA , golden fingers
Electronics Forum | Fri Aug 26 09:57:21 EDT 2005 | russ
The Immersion gold is not a problem with BGAs specifically but "black pad" which can be present anywhere. The unfortunate thing with BGAs is you cannot see it. Personally I hate white tin. It is okay for single sided boards running no-clean, but c
Electronics Forum | Wed Apr 06 12:21:14 EDT 2011 | ripper
Hi, I am process engineer in PCBA factory.I have a question about gold plating on BGA.I want to know difference soldering performance between gold plating electrolytic and ENIG.Many thank for any idea.
Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
Industry News | 2018-12-08 03:22:25.0
Electronic Components, Parts and Their Function
Technical Library | 2019-07-17 17:56:34.0
The increased demand for electronic devices in recent years has led to an extensive research in the field to meet the requirements of the industry. Electrolytic copper has been an important technology in the fabrication of PCBs and semiconductors. Aqueous sulfuric acid baths are explored for filling or building up with copper structures like blind micro vias (BMV), trenches, through holes (TH), and pillar bumps. As circuit miniaturization continues, developing a process that simultaneously fills vias and plates TH with various sizes and aspect ratios, while minimizing the surface copper thickness is critical. Filling BMV and plating TH at the same time, presents great difficulties for the PCB manufactures. The conventional copper plating processes that provide good via fill and leveling of the deposit tend to worsen the throwing power (TP) of the electroplating bath. TP is defined as the ratio of the deposit copper thickness in the center of the through hole to its thickness at the surface. In this paper an optimization of recently developed innovative, one step acid copper plating technology for filling vias with a minimal surface thickness and plating through holes is presented.
Technical Library | 2013-05-30 17:33:26.0
This paper covers the following topics: The Measurement Application, Measurement Requirements, Measurement Problems, Measurement Results, Reference Samples, Conclusions
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
SMTnet Express, August 7, 2014, Subscribers: 23058, Members: Companies: 13975, Users: 36604 Gold Embrittlement In Lead-Free Solder. Craig Hillman, Nathan Blattau, Joelle Arnold, Thomas Johnston, Stephanie Gulbrandsen; DfR Solutions , Julie Silk
Imagineering, Inc. | https://www.pcbnet.com/blog/the-role-of-pcb-assembly-and-fabrication-in-the-aerospace-industry/
assembly to avoid damaging components during assembly. The finishing material of aerospace PCBs should be able to tolerate harsh environments. The most common choices include: Electrolytic nickel and gold. Electrolytic wire bondable gold. Electroless nickel
ORION Industries | http://orionindustries.com/pdfs/gappad.pdf
. The material is available in die-cut parts and sheets. Standard sheet size is 8" X 16", with or without adhesive. To calculate the approximate amount of deflection for a specific material thickness, at a given pressure, refer to the graph below
