With a combination of specialized processes and equipment, the boards were custom manufactured from double-sided glass-reinforced PTFE. This PCB is used for controlled impedance within a microwave application.. Utilizing advanced photolithography a
Silver Filled, Electrically Conductive Ink for Screen Printing AG-800 is a unique, electrically conductive silver filled ink designed for high-speed screen printing in flex circuit, membrane switch, and other additive circuit applications. AG-800 i
Electronics Forum | Thu Aug 29 17:45:54 EDT 2002 | nifhail
What are other testing/process step that we should do if we where to use the old date code QFPs other than solderability and baking ? What is the plating composition normally %? lead, % tin etc. I have my policy not to accept the more than 12 mont
Electronics Forum | Wed Aug 09 08:06:07 EDT 2006 | davef
See "IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards" 3.2.1 Immersion Tin Thickness. The most common reason for solderability issues with the white tin surface coating during multiple thermal excursions is a thin white ti
Industry News | 2003-06-23 08:49:39.0
Three Organizations from the US, Europe and Japan to
Industry News | 2011-11-03 21:52:00.0
By davef: I was fortunate to be able to attend the SMTAI Exhibition Oct. 18-19, 2011. While I was walking around looking at the booths and talking to the exhibitors, I got this idea that I would report back on things that I found interesting. You know spread the news, since not everyone was there.
Technical Library | 1999-05-06 15:31:13.0
Tin plating on a component lead makes its soldering easier. Everybody knows that. Not so well known is that tin plating has shelf life -- its ability to be easily soldered degrades over time. the speed and severity of degradation depends both on storage conditions and on the plating itself...
Technical Library | 2023-01-02 17:50:34.0
Silver bearing alloys have been used in electronics soldering for many years. Silver has been used in tin-lead solders (Sn62Pb36Ag2) to combat silver scavenging from silver plated electronic components as well as to improve thermal fatigue resistance. Many of the common lead-free alloys contain some amount of silver. Silver bearing alloys have good electrical and thermal conductivity as well as the ability to wet to the common surface finishes used in printed wiring assemblies, thus giving it all the attributes needed for an electronic solder alloy. Presence of silver in Sn based solders increases the bulk solder modulus and is generally believed to improve resistance to fatigue from thermal cycles. Increased solder modulus can be advantageous or disadvantageous depending on the desired performance attribute. For example in high strain rate situations, higher modulus of the bulk solders results in lower life time. A wide variety of leaded and lead-free
New Upgrade — I.C.T SMT LED Flexible Pick and Place Machine M series In 2022, we have upgraded the equipment of the M series pick and place machine for SMT Production line. I.C.T M series pick and place machine is mainly used for the producti
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
BGA Package Component Reliability After Long-Term Storage BGA Package Component Reliability After Long-Term Storage In 2008, the white paper Component Reliability After Long Term Storage was published in support of shelf life extension
01005 production goes industry wide 01005 production goes industry wide The introduction of the 01005 chip components in 2004 was a challenge to the whole electronics equipment assembly industry. The components miniature size made them difficult
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-glossary-of-terms
plated hole in a circuit board. Through hole components have leads that are inserted into and soldered to plated through holes. Tin Whiskers Whiskers are crystalline, electrically conductive, hair-like structures that grow from metal surfaces. They are
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/journal.cfm
Kim Abstract 14-1 AUTOMOTIVE PBGA ASSEMBLY AND BOARD-LEVEL RELIABILITY WITH LEAD-FREE VERSUS LEAD-TIN INTERCONNECT Andrew Mawer Abstract 14-1 EFFECT OF THERMAL CYCLING RAMP RATES ON SOLDER JOINT FATIGUE LIFE V.Srirama Sastry Abstract 2000 13-4 EFFECTS
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