What Does FR-4 Mean?
Gail writes: Dr. Ron, What does FR-4 mean? Gail Gail, FR means “Flame Retardant” and 4 means fiber glass epoxy. This term is used t...
Dr. Ron Lasky's Blog
High Lead Solders Exempt from RoHS
Eric writes: Dr. Ron, I have an application that uses a high melting point solder. The solder has more than 85% lead. Is it exempt from RoHS? Eri...
The Passing of Ron Daniels (1948-2005)
Folks, I was reminded of the Apostle James’s admonition: You life is but a vapor that soon passes James 4:14, upon hearing of the untimely pass...
Join Me in Toronto (June 13) or Boston (June 15) for a Lead Free (RoHS/WEEE) Workshop
Folks, I will be giving a one day workshop, first in Toronto and then in Boston on Best Practices in Implementing Lead Free Assembly. Many of yo...
You cannot "grind up" a product and analyze the powder to show RoHS compliance
Candy writes: Dear Dr. Ron: I work in telecommunication company in Taiwan. Recently we have received many inquiries on WEEE and RoHS from our ...
Dr. Ron's Daughter Jessica Defends her Ph.D. at Harvard
Folks, I am obviously proud that my daughter Jessica Lasky Su defended her PhD thesis this past Friday. She has performed ground breaking work using s...
Registering for WEEE Continued
Doc Ron, Re: your definition of Producer: If I buy a Dell computer and re-sell it as an integrated, but separable, part of my product/system, are you ...
News from Quickstart Seminar: Lead Free Has Advantages
Folks, My friends at Indium put on another of their terrific Quickstart Workshops in Libertyville, IL this past Tuesday and Wednesday. In addition to ...
The Miracle of Soldering
Folks, We work with it everyday so we take it for granted. Soldering is a miracle. Soldering enables us to bond mechanically and electrically two piec...
What Nina Taught Me
Folks, In addition to being a major part of my fitness program, Nina has taught me a lot. While teaching my course at Dartmouth, Materials: The Substa...
Only the Company that "Puts the Product on the Market" Need Register for WEEE
George asks: Will the venders of subassemblies and accessories of a computer need to register for WEEE compliance? For the case of a desk-top computer...
Is California going RoHS?
Paul Writes: Ron I attended your class earlier in the year in Anaheim, California. Since that time several questions have come up that I think you cou...