Technical Library | 2019-05-24 09:22:59.0
There is a smaller process window and a much narrower margin of error when creating and using lead-free reflow profiles for surface mount parts on printed circuit boards (PCBs). Solder balls, dewetting, tombstones, voids, and head-on-pillow problems will occur much more frequently because lead-free alloys behave differently than eutectic pastes. Problems are compounded due to the extra heat necessary for some lead-free pastes to reach their melting points.
SMTA International Electronics Exhibition Tuesday, September 29: 9am-5pm Wednesday, September 30: 9am-4pm Donald Stephens Convention Center Rosemont, IL See More Equipment & Technology Than Ever Before! Many of the 160 exhibiting companies will bri
New Equipment | Rework & Repair Services
On the cutting edge of technology, we offer a full line of high tech services to assist contract manufacturer's and product research and developers. Specializing in quick turn around times to help get your product to market on time. Training Serv
Industry News | 2010-04-10 02:16:34.0
IPC has released the E revision of IPC-A-610, Acceptability of Electronic Assemblies. IPC's most widely-used standard, which provides visual acceptance criteria for post assembly mechanical and soldering assembly requirements, now addresses additional technologies, including flexible circuits, board in board, package on package, depanelization and additional SMT terminations.
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).
Technical Library | 2020-05-08 18:22:31.0
A customer contacted the Helpline to perform analysis on a lead-free assembly which exhibited intermittent functionality. The lead-free assembly exhibiting intermittent functionality when pressure was applied to the ball grid array (BGA) packages. Industrial adaptation of a Restriction of Hazardous Substances (RoHS) compliant solder standard has created a new host of failure modes observed in lead-free assemblies. Pad cratering occurs when fractures propagate along the epoxy resin layer on the underside of the BGA connecting pads. While originating from process, design, and end use conditions, it is the combination of a rigid lead-free solder with inflexible printed circuit board (PCB) laminates that has advanced the prevalence of this condition. Pad cratering is simply the result of mechanical stress exceeding material limitations.
DIP Double-side Camera Online AOI Machine ETA-V5300 If you could not find any similar items you want, you may send some photos to us. because our catalog and website haven't included all of our products. solder paste inspection,SMT SPI,SPI mac
Parts & Supplies | Assembly Accessories
YAMAHA YS24 track mounter table Y axis tank chain keel drag chain KKE-M919F-00 YAMAHA YS24 track mounter table Y axis tank chain keel drag chain KKE-M919F-00 We also supply the below products: KHY-M71G5-A0 Z UNIT ASSY. YS12 Z-axis motor YG12 Z
ETA DIP Inverted Camera Online AOI Machine ETA-V5200 If you could not find any similar items you want, you may send some photos to us. because our catalog and website haven't included all of our products. solder paste inspection,SMT SPI,SPI m
Industry News | 2009-06-11 12:25:44.0
Company Expands Training Services
