Acid Washed RFID Uncategorized Add comments Aug 222008 This is left when you acid wash rfid chips and take pictures of them. That antenna lead there is .0001 in diameter. We tip our hat to the Hackerbot Labs! More and moar. One Response to “Acid Washed RFID” Comments (1) jeff says: August 23, 2008 at 2:49 am The bondwire is probably 0.001″ diameter, not 0.0001″. 0.001″ = 1 mil (1 mil as in one thousandth of an inch, not 1 mm). 1 mil wire is a standard size, although smaller wires are used in high density packages. I used to have to wirebond chips like this one and perform custom surgery like soldering tiny copper wires to the bondwires to make them resonate at different frequencies. The fun part about trying to solder to a gold bondwire is that if you get it too hot, the gold will alloy with the solder and vanish right before your eyes! Reply Leave a Reply Cancel reply Your Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Name (required) E-mail (required) URI Save my name, email, and website in this browser for the next time I comment.