Industry Directory | Manufacturer
Manufacturer of advanced process chemistry for plating, masking and stripping. Custom manufacturing of automated equipment for electrodeposion including; hoist systems, reel-to-reel and continuous vertical processing equipment.
New Equipment | Test Equipment
The hand-held PHASCOPE® PMP10 is ideally suited for quality control in the electroplating and printed circuit board (PCB) industries. Because the instrument employs the phase-sensitive eddy current method (ISO 21 968), it allows the measurement of me
Double-Sided & Multi-Layer PCB Material: - FR-4 / Hi-Temp FR-4 / FR-5 / G10 / BT / Polyimide - Very Thin PCB: 0.004" 2L ~ 0.030" 8L - Thick Copper: 1/4 oz. ~ 11 oz. Process: - PTH - Blind/Buried/Segmented Via - Sequential Lamination - MicroVia Capa
Electronics Forum | Tue Aug 31 12:42:45 EDT 1999 | Charles Barker
****************************************** ***************** HELP! *************** ****************************************** We are having a special ceramic smt board made. The boards are 16-up arrays that have smt pads on both sides. Only thre
Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef
Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl
Industry News | 2012-01-13 13:27:59.0
The SMT stencil market has a slew of new options in foil materials, coatings and cutting technologies, all of which promise to improve the solder paste printing process. Which of these options really do help assemblers keep yields up and costs down, and which don’t?
Industry News | 2010-09-13 15:36:15.0
IPC — Association Connecting Electronics Industries® has released IPC-1601, Printed Board Handling and Storage Guidelines. The industry's sole standard on the handling, packaging and storage of printed boards, IPC-1601 provides users with guidance on how to protect printed boards from contamination, physical damage, solderability degradation, electrostatic discharge and moisture uptake.
Parts & Supplies | Board Cleaners
engine accessory ai rubber hose silicone rubber hose combusition engines Specifications high quality custom cnc machining aluminum metal part products Item high quality custom cnc machining aluminum metal part products Material Stainless Steel
Technical Library | 2023-08-04 15:27:30.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
Technical Library | 2023-02-13 19:23:18.0
Spontaneously forming tin whiskers, which emerge unpredictably from pure tin surfaces, have regained prevalence as a topic within the electronics research community. This has resulted from the ROHS-driven conversion to "lead-free" solderable finish processes. Intrinsic stresses (and/or gradients) in plated films are considered to be a primary driving force behind the growth of tin whiskers. This paper compares the formation of tin whiskers on nanocrystalline and conventional polycrystalline copper deposits. Nanocrystalline copper under-metal deposits were investigated, in terms of their ability to mitigate whisker formation, because of their fine grain size and reduced film stress. Pure tin films were deposited using matte and bright electroplating, electroless plating, and electron beam evaporation. The samples were then subjected to thermal cycling conditions in order to expedite whisker growth. The resultant surface morphologies and whisker formations were evaluated.
Heller Industries Inc. | https://hellerindustries.com/intermetallics-growth/
Intermetallic Growth on PCB - Heller Home » Intermetallic Growth on PCB Re-printed in partnership with ITM Intermetallic Growth on PCB Where the tin-lead solder adheres to the copper of the lead (from plating) and to the pad
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Intermetallic Growth on PCB-News-Reflow oven,SMT Reflow Soldering Oven-cmsadmin Reflow oven,SMT Reflow Soldering Oven 当前位置: Home >> News >> News Intermetallic Growth on PCB Intermetallic Growth on PCB Where the tin-lead solder adheres to the copper of the lead
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
2481 Hilton Drive
Gainesville, GA USA
Phone: (770) 538-0411
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