Wiardgroup

There are no plans to remove the lead content from any Wiard electronics.

Wiard modules are museum pieces and are designed using "archival" techniques with the goal 
of having a useful life of 100 years. The use of lead solder is intrinsic to this process, since 
the life span of lead solder connections is know from experience to last this period of time.

The life span of lead-free solder joints in not know at this time. There is a known failure 
mode in lead-free solder which prevent it's use in military and high reliability electronics (tin 
whisker growth).

I can assure you the lifetime ground water lead pollution of all Wiard modules ever built does 
not approach 1/1,000,000 the number of lead molecules leached by acid rain from all the 
leaded glass windows in churches during a single rain storm.