G9 + automatic vision printing machine is a new product for SMT high-end application field, which can perfectly meet the process requirements of 03015, 0.25pich and other fine spacing, high precision and high speed. Introduction to standard function
PCB solder paste printer for SMT is needed to screen print solder paste onto the printed circuit board (PCB) before placement of surface mount components (SMD) for Reflow Soldering. Automatic PCB solder paste screen printer with pecial
Electronics Forum | Wed Jan 26 14:33:47 EST 2000 | Glenn Robertson
Tuan - How about Sn/0.7Cu? It's M.P. is 227 and it's readily available. If the leads are Gold plated you might consider pre-tinning them. If you need a higher temp alloy any of the major solder companies can help - I suggets you start with Ind
Electronics Forum | Wed Jan 26 13:43:06 EST 2000 | Tuan Bui
221 degree C) to achieve good wetting and shiny filet. Comments and recommedations are welcome.
Industry News | 2011-03-28 13:24:06.0
Eleven products have been selected for inclusion in the Innovative Technology Center at IPC APEX EXPO™, April 12–14, 2011, in Las Vegas, according to show organizer IPC – Association Connecting Electronics Industries. Assessed by a review board of industry experts, the products were selected based on their representation of a new or emerging technology of significant value and relevance to the electronics manufacturing industry.
Industry News | 2020-02-18 15:10:01.0
IPC presented Committee Leadership, Special Recognition and Distinguished Committee Service Awards on February 3 and 5 at IPC APEX EXPO 2020 at the San Diego Convention Center. The awards were presented to individuals who made significant contributions to IPC and the industry by lending their time and expertise through IPC committee service.
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Technical Library | 2020-07-29 19:58:48.0
The majority of flexible circuits are made by patterning copper metal that is laminated to a flexible substrate, which is usually polyimide film of varying thickness. An increasingly popular method to meet the need for lower cost circuitry is the use of aluminum on Polyester (Al-PET) substrates. This material is gaining popularity and has found wide use in RFID tags, low cost LED lighting and other single-layer circuits. However, both aluminum and PET have their own constraints and require special processing to make finished circuits. Aluminum is not easy to solder components to at low temperatures and PET cannot withstand high temperatures. Soldering to these materials requires either an additional surface treatment or the use of conductive epoxy to attach components. Surface treatment of aluminum includes the likes of Electroless Nickel Immersion Gold plating (ENIG), which is extensive wet-chemistry and cost-prohibitive for mass adoption. Conductive adhesives, including Anisotropic Conductive Paste (ACP), are another alternate to soldering components. These result in component substrate interfaces that are inferior to conventional solders in terms of performance and reliability. An advanced surface treatment technology will be presented that addresses all these constraints. Once applied on Aluminum surfaces using conventional printing techniques such as screen, stencil, etc., it is cured thermally in a convection oven at low temperatures. This surface treatment is non-conductive. To attach a component, a solder bump on the component or solder printed on the treated pad is needed before placing the component. The Aluminum circuit will pass through a reflow oven, as is commonly done in PCB manufacturing. This allows for the formation of a true metal to metal bond between the solder and the aluminum on the pads. This process paves the way for large scale, low cost manufacturing of Al-PET circuits. We will also discuss details of the process used to make functional aluminum circuits, study the resultant solder-aluminum bond, shear results and SEM/ EDS analysis.
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
SMTnet Express, September 7, 2017, Subscribers: 30,782, Members: Companies: 10,712, Users: 23,761 Challenges on ENEPIG Finished PCBs: Gold Ball Bonding and Pad Metal Lift Young K. Song and Vanja Bukva; Teledyne DALSA As a surface finish for PCBs
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