Electronics Forum | Fri Jan 31 13:37:22 EST 2003 | MA/NY DDave
Hi Hopefully someone else will add more. The IPC has some patterns on this topic so you might wish to check their literature. Scoring is another technique. You are pretty thick at .135 so you want to make the drill hits as close as possible, and y
Electronics Forum | Sat Feb 01 16:11:24 EST 2003 | Paul Smith
I would suggest scoring if the profile allows, leaving residual material of circa 40 - 50 mil - That is what I do on a 125mil thick PCB width of the pis is approx 200 mil Mouse bites on a board as thick as 135 mil will mean its extremly difficult to
Electronics Forum | Mon Feb 03 14:31:19 EST 2003 | Stephen
We use a Mighty Mutt machine. Not 100% sure of spelling. It works well for us. It has a metal vaccuum tube and heated metal wires, and is grounded. I used to work for a company that used a sandwich bag sealer. That was not good at all. If you buy
Electronics Forum | Wed Feb 12 10:03:47 EST 2003 | stefwitt
Greg, you pointed out yourself the many advantages of bulk feeding. I would like to mention that the higher component accuracy and the feeding track accuracy of the bulk feeder contribute to an improved pick failure rate of small ( 0402�s ) component
Electronics Forum | Fri Feb 21 10:03:43 EST 2003 | genny
Sure they'll do it...If you're willing to pay double or triple the cost. It might not be as easy as you think. the value is usually marked in white over the black carbon area that actually is the resistor. Underneath is just the white ceramic carr
Electronics Forum | Fri Feb 21 14:20:56 EST 2003 | jseagle
Has anyone actually seen 0402 or 0201 part with the value on it? I haven't. So what would be the big deal if these parts are placed upside down. The only difference I have noticed is usually on a resistor one side is black and the other is white an
Electronics Forum | Mon Feb 03 18:37:28 EST 2003 | jonfox
Not to be off-topic, but push engineering for embedded passives and remove parts from the underside all together. Watch the material cost sky rocket, but watch the manufacturing cost sink and well as improve the production cycle by 50%. Sorry, I w
Electronics Forum | Tue Feb 04 09:12:40 EST 2003 | davef
Near the top of Phil's front page is thin blue bar with white lettering that extends horizontally across the page. Click on the word "articles" on that blue bar. It will turn a rusty-brown and load another page. On that page, click on the article
Electronics Forum | Mon Feb 03 23:55:58 EST 2003 | MA/NY DDave
Hi If this is the tombstoning I know which is evidenced by parts touching each other and some obvious colored material at the edges just wash them again real good. Now you might want to do some IR tests just in case you will have a reliability hit.
Electronics Forum | Wed Feb 05 13:56:40 EST 2003 | davef
I figure if you need the rest, you don't need these. These strips are from some laser cutting tool fabricator. They give them to their customers [laser cut stencil fabricators] so the customer can do a good job. Yall have a nice day now, y'hear?