But a newly published study 1 explored exactly that situation. Until recently, we had no real-world, production-based data on the soldering behavior of the SnCuNi alloy near the low margin of the reflow window. Laboratory tests have demonstrated good wetting at lower temperatures, but they’re just that – lab tests. It’s that 7-degree difference in minimum reflow temperatures that generates the fear – of cold joints, incomplete wetting, inconsistent IMC formation or other reliability issues - if the peak temperature of a solder joint falls into that questionable space between 233 and 240☌. Applying the 13-degree guideline to the SnCuNi alloy results in a minimum peak temperature recommendation of 240☌. Recommended reflow temperatures are typically at least 13☌ higher than melting temperatures hence the SAC305 peak temperature window of 233 – 255. SAC305 begins to melt at 217☌, reaching its fully liquid state at approximately 220.6☌. Fear of full compatibility with SAC reflow processes. Why has it not gained major acceptance as an SMT alloy? In large part, fear. Because it contains no silver, it is much more economical than SAC alloys containing 1, 3 or even 4 percent of the precious metal, and it produces smooth, shiny, easy-to-inspect solder joints. Nickel-modified tin-copper solder, known commercially as SN100C®, is a leading lead-free alloy for PTH soldering, rework and hot air leveled PCB final finishes. Pricelist and quotation consultation are available if you need.Sn/Cu/Ni soldering performance at low temperatures. Welcome to buy our discount and low price paste flux used for making solder paste made in China. ![]() We have professional workers who have consummate skills producing high quality products in our factory. Paste flux used for making solder pasteBBIEN Technology is one of the professional manufacturers and suppliers of paste flux used for making solder paste. ![]() Pricelist and quotation consultation are available if you need. Welcome to buy our discount and low price bga tacky solder flux made in China. īBIEN Technology is one of the professional manufacturers and suppliers of bga tacky solder flux. Shelf life is general 6-12months from the date of manufacture when handled properly and held at 5-8☌. The typical peak temperature will be 235°-245☌ degrees with 60-90 seconds over reflow (217☌). in a leadfree application the soak zone time (150°-217☌) can be 60- 90 seconds. The typical peak temperature will be 205°-215☌ degrees with 60-90 seconds over reflow (183☌). In a leaded application, the soak zone time (150☌-184☌) can be 60-90 seconds. This allows the use of tacky flux in a leaded or lead-free application. Can be used in Pb free or Sn/Pb processesĪpplication for paste flux used for making solder paste.Capable for high density as well as general purpose Lead-Free soldering processes.Excellent Lead-Free soldering performance on various board finishes.Specifically designed for use on Cu-OSP PCBs Benefits:. ![]()
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