Technical Library | 2013-03-21 21:24:49.0
This paper explores the behaviour of a copper test vehicle with multiple reflowed solder joints, which has direct relevance to ball grid arrays (BGA) and high density interconnect structures. The paper explores the relative stress conditions on the distributed joints and the sensitivity to ball joint shape... First published in the 2012 IPC APEX EXPO technical conference proceedings
Industry News | 2013-12-18 15:18:53.0
Isola Group had successfully transitioned the manufacturing of its low-loss, I-Speed material to Asia. The move was in response to an increased demand for I-Speed products. The cost benefits of manufacturing in Asia have enabled a price reduction of I-Speed for printed circuit board (PCB) fabricators located in the Asia-Pacific region.
Industry News | 2020-11-03 13:18:05.0
MacDermid Alpha Electronics Solutions announces the release of CircuEtch 200, a high performance anisotropic final etch for circuit formation in Semi-Additive and modified-Semi-Additive processes (SAP/mSAP) utilized in IC substrate and substrate-like HDI manufacturing.
Industry News | 2018-10-18 08:42:00.0
Reflow oven zone temperature set up and thermal profile
Industry News | 2018-10-18 09:27:40.0
Time Temperature setting wave soldering is the most important in the solder melts
Industry News | 2010-04-12 16:09:04.0
RESEARCH TRIANGLE PARK, N.C. — DuPont Circuit & Packaging Materials (CPM) introduced its newest high-performance laminate for printed circuit boards. DuPont™ Pyralux® TK flexible circuit material is a copper clad laminate and bonding film system specifically formulated with DuPont™ Teflon® fluoropolymer film and Kapton® polyimide film for high speed digital and high frequency flexible circuit applications. DuPont™ Pyralux® TK delivers the lowest dielectric constant (DK) of any thin laminate and bondply material on the market today.
Industry News | 2013-07-22 17:01:59.0
Isola Group S.a.r.l. announced today its new low loss, low skew, high-speed material, GigaSync™. This product has been engineered to eliminate skew issues in high-speed designs that use differential pairs to create a balanced transmission system able to carry differential (equal and opposite) signals across a printed circuit board.
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 | 2024-04-08 15:46:36.0
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.
Industry News | 2018-10-18 09:45:34.0
How to Export Gerber Files from Eagle
