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 | 2019-10-21 09:58:50.0
An ACI Technologies customer inquired regarding printed circuit board(PCB) failures that were becoming increasingly prevalent after the SMT (surface mount technology) manufacturing process. The failures were detected by electrical testing, but were undetermined as to the location and specific devices causing the failures. The failures were suspected to be caused predominately in the BGA (ball grid array) devices located on specific sites on this 16 layer construction. Information that was provided on the nature of the failures (i.e., opens or shorts) included high resistance shorts that were occurring in those specified areas. The surface finish was a eutectic HASL (hot air solder leveling) and the solder paste used was a water soluble Sn/Pb(tin/lead).
Industry News | 2012-01-22 23:16:58.0
More than 350 engineers who attended last week’s IPC webinar, Soldering and Assembly Defects, were polled on their biggest headaches with printed boards, PCB components and PCB assembly process failures. The survey results which identify solder finish, ball grid array (BGA) components and reflow soldering as the greatest challenges, provide webinar co-sponsor, National Physical Laboratory (NPL) of the United Kingdom with useful information as it prepares its NPL Process Defect Clinic for IPC APEX EXPO® 2012.
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Industry News | 2010-04-10 02:05:54.0
IPC released today the A revision of IPC J-STD-609, Marking and Labeling of Components, PCBs and PCBAs to Identify Lead (Pb), Lead-Free (Pb-Free) and Other Attributes. This standard presents a marking and labeling system that aids in electronics assembly, rework, repair and recycling, and now provides additional codes for the more precise specification of certain lead-free solders.
Industry News | 2018-06-26 20:35:35.0
The SMTA is pleased to announce that the program and registration for the SMTA International Conference and Exhibition is finalized and available on-line at www.smta.org/smtai. Taking place October 14-18, 2018 at the Donald Stephens Convention Center in Rosemont, Illinois, the conference features 20 workshops, 130 technical papers, and numerous complimentary offerings for engineers and professionals in the electronics manufacturing industry.
Industry News | 2013-02-14 08:18:47.0
IPC – Association Connecting Electronics Industries® has announced the winners of the Best U.S. and International Papers of IPC APEX EXPO® 2013
Industry News | 2009-01-23 19:18:23.0
You are invited to submit a paper to the electronic industry's premier forum on the manufacture of electronic products utilizing surface mount and related technologies.
Industry News | 2023-07-19 10:18:06.0
IPC China Skills Competition has been upgraded to IPC Masters Competition China 2023. The competition was co-organized with Pudong New Area Association for Quality and Technology Shanghai and held July 11-13 in Shanghai.
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