Technical Library | 2022-12-23 20:44:54.0
One of the upcoming reliability issues which is related to the lead-free solder introduction, are the headin-pillow solderability problems, mainly for BGA packages. These problems are due to excessive package warpage at reflow temperature. Both convex and concave warpage at reflow temperature can lead to the head-in-pillow problem where the solder paste and solder ball are in mechanical contact but not forming one uniform joint. With the thermo-Moiré profile measurements, this paper explains for two flex BGA packages the head-in-pillow. Both local and global height differences higher than 100 µm have been measured at solder reflow temperature. This can be sufficient to have no contact between the molten solder ball and solder paste. Finally, the impact of package drying is measured
Technical Library | 2021-08-25 16:34:37.0
As the traditional eutectic SnPb solder alloy has been outlawed, the electronic industry has almost completely transitioned to the lead-free solder alloys. The conventional SAC305 solder alloy used in lead-free electronic assembly has a high melting and processing temperature with a typical peak reflow temperature of 245ºC which is almost 30ºC higher than traditional eutectic SnPb reflow profile. Some of the drawbacks of this high melting and processing temperatures are yield loss due to component warpage which has an impact on solder joint formation like bridging, open defects, head on pillow.
Technical Library | 2021-09-08 13:43:56.0
Manganese can be an optimal alloying addition in lead-free SAC (SnAgCu) solder alloys because of its low price and harmless nature. In this research, the mechanical properties of the novel SAC0307 (Sn/Ag0.3/Cu0.7) alloyed with 0.7 wt.% Mn (designated as SAC0307-Mn07) and those of the traditionally used SAC305 (Sn96.5/Ag3/Cu0.5) solder alloys were investigated by analyzing the shear force and Vickers hardness of reflowed solder balls. During the preparation of the reflowed solder balls, different cooling rates were used in the range from 2.7 K/s to 14.7 K/s.
Technical Library | 2011-06-09 13:29:17.0
Flatness measurement of electronic parts and assemblies, or PCB’s, has become increasingly critical as geometries become smaller: finer pitches, smaller solder ball volumes, thinner substrates, etc. Additionally, processing temperatures vary and can pla
During use solder builds up in the cavity in cold bump pull (CBP) jaws. This reduces their grip efficiency and affects the quality of your measurements. Cleaning the cavities is very difficult and small ball cavities can be damaged easily. XYZTEC ha
Industry Directory | Consultant / Service Provider / Manufacturer / Other
Global provider of Legacy PCB Re-Engineering Systems & Process Control Tools since 1990.
Industry Directory | Manufacturer
Alltemated sets the standard for tape and reel packaging, IC programming, lead trim/forming, bake and dry-pack services and carrier tape manufacturing.
HONGKONG FUHUA INDUSTRIAL LIMITED's main business is SMT equipment�Bparts as well as provide development�Bproduction�Bsales�Band maintenance of assistant equipment, there are jointing technique department�Bmechanism department etc in my company,and
New Equipment | Solder Materials
Solder Balls... Solder Spheres... Whatever you may call it, we think it is the perfect soldering package. We consider it the ultimate solder preform for solder attach, rework / reballing of PIP, POP, PBGA, or Flip Chip… The relative low cost and indu
Industry News | 2010-05-29 18:01:49.0
TORRANCE, CA — Seika Machinery, Inc., a leading provider of advanced machinery, materials and engineering services, introduces M.S. Engineering Co. Ltd.’s PR1 BGA Solder Ball Checker for fast and accurate inspection of BGA soldering and QFP lead sections.
