Flason SMT Automatic SMT 1200mm Solder paste printer for SMT assembly line Power Supply: AC:220±10%,50/60HZ Control Method: PC Control PCB Size/Max:1200*340mm Weight Approx:1500Kg Product description: Automatic1200mm SMT Solder paste p
Flason SMT Second hand Automatic1200mm Solder paste printer for SMT assembly line Power Supply: AC:220±10%,50/60HZ Control Method: PC Control PCB Size/Max:1200*340mm Weight Approx:1500Kg Product description: Second hand Automatic1200mm
Electronics Forum | Tue Jun 27 10:36:45 EDT 2000 | Bill Bannister
We've been experiencing solder balls on 0805 caps. We have modified the reflow profile and had some success, but some balling still persists. The balls always form from under the cap between the lands. I measured the distance between the lands at .03
Electronics Forum | Thu May 26 08:52:42 EDT 2011 | davef
Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste � Not An Option Contributed by Phil Zarrow of ITM an Independent SMT consulting firm With soldering being the dominant source of assembly
Industry News | 2021-05-21 14:09:53.0
Gowanda's Space/Aero Chip Inductors provide Lower Power Consumption in High Frequency Applications
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)
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Tin Whisker - All You Should Know - SMTA Webtorial
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| https://unisoft-cim.com/crosschecking-pcb-component-footprint-and-bom-footprint.html
(correct solder pad size and land pattern) for the same component listed in the Bill of Materials (BOM). The mismatch of component footprint spacing is usually an error created when components on the PCB assembly ( PCBA
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