ISN-870 is specially formulated immersion tin process,which is suitable for lead-free soldering. It's a kind of good immersion tin process with high reliability, excellent welding. ISN-870 process is immersed in sulfuric acid,and tin thick can be controlled above 1.0μm,which meet the requirement of current market. Its benefits included stability, operating and low cost.
ISN-870 process is four step process, suitable for vertical and horizontal practices,and comply with Rohs and WEEE or all kinds of lead-free standards. Its shelf life can be 12 months at 20-30 ℃, 40-70% R.H and packing with vacuum and without sulfur.
Prcocess features
• Stable and easy to be controlled
• High stability and long bath life
• Stable Tin layder
• excellent solderability.
• Several times Lead-free IR reflow Testing
• Prevent from tin whisker
• Compatible with green oil resistance flux ann low running cost
• Suitable for horizontal operation
Reliability testing result
• Wetting balance test result is stable and reliable, a variety of reliability test still maintain good wetting angle
• long-term and reliable welding performance, no poor soldering
• special additives forming regular crystallization, effectively inhibit the growth of tin whisker
