Industry Directory | Manufacturer
US manufacturer of metallized ceramic substrates & packages; specializing in PCTF (plated copper over thick film) & low cost AgENIG (silver with electroless nickel and immersion gold plating).
Industry Directory | Consultant / Service Provider / Distributor / Manufacturer / Other
Ludee Circuits offer RoHS PCB.We could offer leadfree HASL,Entek, flash gold, immersion gold, immersion silver, immersion tin finishing based on standard FR-4, CEM-3 materials, Teflon, Rogers RO4000 series, as well as high Tg S1170 materials.
1). 1+C+1 HDI, blind L1-L5/L5-L8 vias. 2). FR-4 Material, 1 oz weight. 3). 8 layer, 1.6mm thick. 4). 4/4 mils track and space 5). Min.drill 0.1mm 6). Green solder mask/ white silkscreen 7). Immersion gold over nickel
New Equipment | Assembly Services
Quick turn Prototype PCBs from 24 hour turnaround to high volume printed circuit board production from our domestic plant in USA and/or China facilities. Our Modern 38,000 sq. ft. manufacturing plant with multi-million dollar investment with latest e
Electronics Forum | Fri Sep 21 10:35:37 EDT 2012 | davef
Flash gold is just thin electrolytic gold plating over electroless nickel or electrolytic nickel. Flash gold plating ... * Less than 3 microinch thick will be porous and take solder poorly * Greater than 10 microinch thick will cause brittle solder c
Electronics Forum | Tue Feb 01 06:54:19 EST 2000 | Roni H.
Hi, Does anyone have experience with gold over nickel (electroless) PCB finish: - Repeatble quality from PCB mfg. (very "painfull" with ENTEK). - Environment condition sensitivity. - Thermal processes sensitivity. - Solderability (Reflow & wave). -
Industry News | 2022-03-08 11:31:41.0
New Adam Tech Cable/Connector Assembly from Omni Pro Supports Speeds up to 48GBPS
Industry News | 2018-10-18 11:08:03.0
Different Techniques for Plating
Parts & Supplies | Circuit Board Assembly Products
1) 160*100mm, FR-4 CTI ≥ 600V 2) 8 layer impedance control 3) Copper weight(finished inner/outer): 1 oz 4) LPI Green mask/white silk 5) Min hole 0.19mm, 5/3 track/gap 6) 1.6mm +/-10% thick 7) Immersiong gold over nickel
Parts & Supplies | Circuit Board Assembly Products
1). 1+C+1 HDI, buried/blind L1-L5/L5-L8 vias. 2). FR-4 Material, 1 oz weight. 3). 8 layer, 1.6mm thick. 4). 4/4 mils track and space 5). Min.drill 0.1mm 6). Green solder mask/ white silkscreen 7). Immersion gold over nickel
Technical Library | 2019-06-07 14:49:54.0
ACI Technologies was contacted in regards to poor solder joint reliability. The customer submitted an assembly that was exhibiting intermittent opens at multiple locations on a ball grid array (BGA) component. The assembly’s functionality did not survive international shipping, essentially shock and vibration failures, immediately making the quality of the solder joints suspect. The customer was asked about the contract manufacturer and the reflow oven profile as well as the solder paste and surface finish used. The ACI engineering staff evaluated the contract manufacturer’s technique and determined that they were competent in the methods they used for placing thermocouples in the proper locations and developing the reflow oven profile. The surface finish was unusual, but not unheard of, in that it was hard gold over hard nickel, rather than electroless nickel immersion gold (ENIG). The customer was able to supply boundary scan testing data which showed a diagonal row of troublesome BGA pins.
Technical Library | 1999-05-07 11:28:39.0
There are many things that can go wrong when soldering to gold plate over nickel surfaces. First of all, we know that gold and solder are not good friends, as any time solder comes into contact with gold, something seems to go wrong. Either the solder bonds to the gold and eventually pulls off as the tin and gold cross-migrate, leaving voids; or the solder completely removes the gold and is expected to bond to the metal which was under the gold.
ACI Technologies Inc. (ACI) is a scientific research corporation dedicated to the advancement of electronics manufacturing processes and materials for The Department of Defense and industry. This video provides an overview of our commercial service
Events Calendar | Wed Apr 20 00:00:00 EDT 2022 - Wed Apr 20 00:00:00 EDT 2022 | ,
Virtual Course: Selection Criteria of Surface Finish for Next Generation PCB Technologies
Events Calendar | Wed Mar 18 00:00:00 EDT 2020 - Wed Mar 18 00:00:00 EDT 2020 | College Park, Maryland USA
CALCE Reliability Science Symposium - Spring 2020
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
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. During reflow, with the addition of tin-lead solders, the intermetallic grows. With other board metal finishes, other metallics form, such as AuSn when soldering components to boards with gold-flash finish (and tin-lead solder
Heller Industries Inc. | https://hellerindustries.com/intermetallics-growth/
. During reflow, with the addition of tin-lead solders, the intermetallic grows. With other board metal finishes, other metallics form, such as AuSn when soldering components to boards with gold-flash finish (and tin-lead solder
