The UK's National Physical Laboratory has developed a test vehicle incorporating specially plated SOIC components mounted on PCBs that have a high propensity to develop tin whiskers
Our study subjected over a dozen alloys to a multitude of tests related to electronic solders, and we learned a lot about the creation of tin whiskers
no longer lives in jeffs basement, it has morphed into a real, live brewery with a space of its own.
The editors said, 'Whether we're talking the International Space Station, a C-17, or a Humvee, tin whiskers
can throw a monkey wrench into system functionality, and even result in loss of life.
1), (2), (3), (4) This change sparked concern since pure-Sn plating has a well-known reliability problem: the potential to spontaneously grow tin whiskers
Some scientists say that tin whiskers
tend to occur when there is less than 3 percent lead in the coatings of a component.
It's not necessarily going to be on the formation of tin whiskers
, a subsystem's reduced operating temperature, the proliferation of counterfeit components or potentially lowered reliability, but rather on the information flow between the customer and the manufacturer.
refers to needle-like crystalline structures of tin (Sn) that form and grow on surfaces that use pure or nearly-pure tin as a final finish.
The guidelines the group has developed are intended to minimize the risk of failures from tin whiskers
can grow from tin-based finishes on components and connectors in a lead-free solder joint (Figure 1).
There are exceptions for medical and the military (who incidentally face critical problems of ensuring that Pb is used on their assemblies--imagine tin whiskers
growing quietly in some ICBM silo), and there are other areas still under discussion or requiring clarification.
Three tests have been proposed by the JEDEC Solid State Technology Association with guidance from the National Electronics Manufacturing Initiative (NEMI) to more effectively screen for the susceptibility to tin whiskers