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 | 2012-12-12 20:19:27.0
A Workshop or Optional PRO-STD-001 Certification
Industry News | 2020-05-27 15:54:35.0
Blackfox is opening its facilities to in-person training for the electronics manufacturing industry with a thorough and documented safety plan for all. If preferred, Blackfox is also offering online IPC training and certification in either English or Spanish from the comfort of your home or office.
Industry News | 2003-05-29 08:30:31.0
Losses halved in the first half year � New organization of electronics group next on the agenda
Industry News | 2003-03-05 08:35:10.0
he will be responsible for formulating R&D strategies and spearheading the Company to keep abreast of the latest development in global manufacturing technology as well as strengthen its R&D division.
Industry News | 2003-02-27 08:41:52.0
Elec & Eltek International Co. Ltd. (
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
Used SMT Equipment | Chipshooters / Chip Mounters
JUKI FX-3 Pick and Place machine Specification Substrate dimension: L- substrate-(410×360mm) L-wide substrate-(510×360mm)*1 XL substrate-(610×560mm) Component Height:6mm size Component range : laser discrimination radar system,0402(British 01005) ~
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