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Thanks for the tip. Unfortunately, there is a problem with the URL and I couldn't access the page? Rick Rick Schmidt ricksintuc@yahoo.com Mining, Mechanical and Electronics engineer.

Thanks for the tip. The NASA manual has a procedure for removing the gold by diluting it with solder and removing it. Very similar to pretinning. The question that has come up relates to the attachment of leads to the gold plated pads a on a die. Thei NASA procedues relate to spacecraft...

I know that gold will cause lead-tin solder joints to become brittle over time, NASA tells me so. They have specific procedures to avoid it. Has anyone seen anything in writing that goes into any detail as to what the mechanism is and when to worry about it? Thanks. Rick Schmidt...

Iknow that gold will cause lead-tin solder joints to become brittle over time, NASA tells me so. They have specific procedures to avoid it. Has anyone seen anything in writing that goes into any detail as to what the mechanism is and when to worry about it? Thanks. Rick Schmidt...

Thanks for the info. I've finally found my old thermo book. It had most of what I needed but I'll definitly keep my eyes open for one of the references on your list. <p>Rick Schmidt<br><a href=mailto:ricks@lpl.arizona.edu>ricks@lpl.arizona.edu</a><br><a href= > </a><br>Mining, Mechanical and...

Has anyone got a good source for the detailed performance equations for an impulse turbine? <p>Rick Schmidt<br><a href=mailto:ricks@lpl.arizona.edu>ricks@lpl.arizona.edu</a><br><a href= > </a><br>Mining, Mechanical and Electronics engineer.

Ensign Bickford has/had a product called primadets which are a delay cap on a flash tube that would be initiated in the same manner as detcord. They are/were very safe and reliable.