Immersion Tin PCB surface finishing

Forms a copper/tin intermetallic joint.

· Provides a dense, uniform coating with superior hole wall lubricity.

· Top choice for backplane panels assembled by pressfit pin insertion.

· Engineered to be very fine grain and non-porous.

· 6 month shelf life.

Issues:

· Sensitive to handling.

· Environmental issues with Thiourea (carcinogen) used in processing.