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)
New Equipment | Rework & Repair Equipment
Stainless Steel Brush (SH-60) 2 5/16" Made of over 300 long, fine, stainless steel bristles. Use to clean flux from solder joints, clean flux and adhesive from solder pad and for general cleaning purposes. Available in Standard and Miniature
New Equipment | Rework & Repair Equipment
Made of over 300 long, fine, stainless steel bristles. Use to clean flux from solder joints, clean flux and adhesive from solder pad and for general cleaning purposes. Available in Standard and Miniature sizes. Stainless Steel Brush (3 1/2"
Industry News | 2003-03-21 08:12:24.0
Tecan reckons it is consistently producing what may be regarded as the most efficient stencils in the world today.
Used SMT Equipment | Chipshooters / Chip Mounters
FUJI, Chip Shooter, type CP643E, s.n. 2066, Left to right, cap. 40.000 CPH, Device input 140-8mm, with 20 heades, 6 nozels each, 2 tables 70 feeders each, PCB dimensions Max: 457mm x 356mm Min: 80mm x 60mm,Board Thickness: 0.3 to 4.0 mm, Component ca
Used SMT Equipment | Chipshooters / Chip Mounters
FUJI, Chip Shooter, type CP643E, s.n. 1278, Left to right, cap. 40.000 CPH, Device input 140-8mm, with 20 heades, 6 nozels each, 2 tables 70 feeders each, PCB dimensions Max: 457mm x 356mm Min: 80mm x 60mm,Board Thickness: 0.3 to 4.0 mm, Component ca
Parts & Supplies | SMT Equipment
Model:YAMAHA YV100II 31 Nozzle ( 0402 X-Small) YAMAHA Nozzle List Brand Model Specification Material of nozzle tip YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Tungsten steel YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Diamond steel Y
Parts & Supplies | SMT Equipment
YAMAHA YV100II 31 Nozzle ( 0402 X-Small) YAMAHA Nozzle List Brand Model Specification Material of nozzle tip YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Tungsten steel YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Diamond steel YAMAHA
Parts & Supplies | SMT Equipment
YAMAHA YV100II 31 Nozzle ( 0402 X-Small) More Yamaha SMT nozzles in stocks YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Tungsten steel YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Diamond steel YAMAHA YV100II 32#NOZZLE For IC of tiny size
Parts & Supplies | Assembly Accessories
Model:YAMAHA YV100II 31 Nozzle ( 0402 X-Small) YAMAHA Nozzle List Brand Model Specification Material of nozzle tip YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Tungsten steel YAMAHA YV100II 31#NOZZLE 0402 / 0603 / 0805 (X) Diamond st