Technical Library | 2023-01-17 17:27:13.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force. Specifically, the effect of the reflow peak temperature and time above solder liquidus temperature are studied. Nine reflow profiles for SAC 305 and nine reflow profiles for SnPb have been developed with three levels of peak temperature (230 o C, 240 o C, and 250 o C for SAC 305; and 195 o C, 205 o C, and 215 o C for SnPb) and three levels of time above solder liquidus temperature (30 sec., 60 sec., and 90 sec.). The shear force data of four different sizes of chip resistors (1206, 0805, 0603, and 0402) are compared across the different profiles. The shear force of the resistors is measured at time 0 (right after assembly). The fracture surfaces have been studied using a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS)
Industry News | 2017-10-02 13:58:42.0
GPD Global will exhibit at the upcoming IMAPS 2017. At booth 244, GPD Global will exhibit a complete line of Fluid Dispensing pumps with the latest dispense technologies for integration or retrofit. Whether your process requires low or high viscosity fluids, thick pastes, or abrasive media, there is a dispense pump to meet your requirements.
Industry News | 2013-09-16 13:58:19.0
Baja Bid has wrapped up another series of auctions, selling used SMT equipment in August to various bidders around the world.
Used SMT Equipment | Screen Printers
DEK Horizon 03iX Fully Automatic Screen Solder Paste Printer Model Horizon 03iX Operating System Win XP+09sp13 or up PCB support Tooling&n
Used SMT Equipment | Screen Printers
DEK Horizon 03iX SMT Printer Model Horizon 03iX Operating System Win XP+09sp13 or up PCB support Tooling Magnetic tooling pins Camera type Hawkeye 750 or Hawkeye 1700 (optional) 198040 198043 hawkeye Board foil clamp siz
Used SMT Equipment | Screen Printers
2.0 Cmk @ ± 12.5 μm (± 6 sigma) System alignment capability > 2.0 Cmk @ ± 25 μm (± 6 sigma) Optimum core cycle time 8 seconds Substrate size 50 mm (X) x 40.5 mm (Y) to 620 mm (X) x 508.5 mm (Y) Operating System Windows 7 Embe
Used SMT Equipment | Board Cleaners
Speedline Technologies AquaJet Stencil Batch Cleaner and Resys ClosedLoop System For Sale The wash needs a control board. (Part Description: BL1700 CNTRL 16IN 16OUT) The Part Number to Purchase this board is 20-101-0214. Estimated cost is $349. We h
Used SMT Equipment | Board Cleaners
• This is a closed-loop DI/washer system • Our cleaning process was 100% DI wash. No chemicals were ever introduced to the machines or process. • Replaced the treatment tanks and performed the PM’s on or before the recommended intervals. The system
