1.1Immersion silver process There is a process that meets that the RoHS standard, immersion silver, which is the common immersion PCB process. Immersion silver is an updated version of HASL and can be used in most applications as a substitute for immersion Gold rather than chemical Nickel (Au/...
As the name suggests, this is one of the most complicated surface finish methods for circuit boards. The electroless palladium layer in the middle prevents the formation of black pads. However, features such as unparalleled solderability, silver and aluminum wire bonding, and long shelf life come ...
Bittele Electronics provides immersion silver PCB surface finishes as an option for its complete PCB assembly service. It is ideal for SMD and High-Speed Assembly applications.
Immersion Silver: Immersion silver is deposited directly on the copper surface by a chemical displacement reaction. Immersion silver processes available in the industry all co-deposit an organic anti tarnish with the immersion silver. The reaction is fast approximately 1-2 minutes and does not require...
CharacteristicsOSPENIGENEPIGImmersion SilverImmersion Tin Shelf Life (controlled conditions)< 12 Months> 12 Months> 12 Months< 12 Months3 – 6 Months Handling / Contact with Soldering SurfacesMust be avoidedShould be avoidedShould be avoidedMust be avoidedMust be avoided ...
Besides immersion gold and gold plating, there are more common surface finishes used in PCB manufacturing such as HASL / Lead Free HASL,Immersion Tin,immersion Silver, OSP / Entek and hard gold pcb surface finish. If you aren't sure what you will need? Consult with a PCB fabricator prior ...
Immersion tin is a coating of tin deposited on the copper layer of a PCB using an electroless chemical process. The layer of tin protects the circuit board from oxidation, thus increasing its shelf life. It usually appears as white after the plating process, hence known aswhite tin. This is...