Surface Finishes

 Finishes

Pros

 Electroless Nickel  Immersion Gold - ENIG
  • Excellent Coplanarity
  • Very good shelf life
  • Excellent Reflow Cycles
  • Excellent Surface Oxidation
  • Wire Bonding
 Immersion Silver
  • Good Coplanarity
  • Good Surface Oxidation
  • Re workable
  • Low Cost
  • Good Process Control & Window
 Hard Gold
  • Good Coplanarity
  • Good Surface Oxidation
  • Good Process Control & Window
  • Good Adhesion
 HASL
  • Good Coplanarity
  • Excellent Surface Oxidation
  • Re workable
  • Very Low Cost
  • Very Good Shelf Life
  • Excellent Reflow Cycles
  • Excellent Wettability
 Immersion Sn
  • Good Coplanarity
  • Good Surface Oxidation
  • Re workable
  • Low Cost
  • Good Process Control & Window


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