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MacDermid Alpha Electronics Solutions
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  5. ALPHA - Model SAC 305 & 405 - Bar ...

ALPHA - Model SAC 305 & 405 -Bar Vaculoy Soldering Alloys

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Sn96.5Ag3Cu0.5 and Sn95.5Ag4Cu0.5 are lead-free alloys suitable for use as a replacement for Sn63 alloy. The Sn97Ag3 and Sn96Ag4 variants are used to stabilize / reduce the copper content in the wave solder bath, this requirement will depend on process conditions. As with all Alpha Metals bar solder, Alpha’s proprietary Vaculoy® alloying process is used to remove certain impurities, particularly oxides.
  • Yield – Best in class yield, out performs all Sn/Cu based materials
  • Wetting speed – fast wetting, in back to back tests 0.65s compared to 1.00s, for Sn/Cu based materials
  • Dross generation – Low dross generation delivered by Vaculoy alloy conditioning
  • Excellent solderability due to fast wetting speed
  • Very good drainage, has lower levels of bridging compared to Sn/Cu alloys
  • Delivers excellent performance across a wide range of Flux technologies

The proprietary Vaculoy process is a highly effective method for removing included oxides from solder. This is extremely important because included oxides generate excessive drossing and increase the viscosity of the solder. Solder with higher viscosity can result in increased soldering defects (i.e solder bridging)