Electronics Forum | Wed Nov 01 07:32:33 EST 2006 | davef
What you have run up against is the unfortunate consequence of the transition period from Sn-Pb to Pb-free. In the past 2-3 years there have been several studies highlighting the differences in reliability between mixed metal systems, Sn/Pb, and SAC
Electronics Forum | Fri Sep 22 16:21:31 EDT 2006 | patrickbruneel
Figure 1. Human Toxicity Potential, Life-cycle Comparison Tin/lead solder paste is the top formula. SAC is second from the bottom.3 RoHS Report Excludes Comparisons By George A. Riley, contributing editor A European Union (EU) Commission for Envir
Electronics Forum | Mon Oct 29 05:14:18 EDT 2018 | vipcircuit
This is Joe from Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon,Taconic,Aluminum base;
Electronics Forum | Wed Oct 24 06:10:58 EDT 2018 | vipcircuit
Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon,Taconic,Aluminum base; 3. Special techn
Electronics Forum | Thu Sep 06 11:56:24 EDT 2007 | gmoritz
> x/y position of that lead does > > not change as the head rotates." > Heh-heh. You'd think so, wouldn't you? > Have you observed this with a magnifying glass? Heh-heh yourself. I (think) I know better than to think that it would withstand tha
Electronics Forum | Wed May 27 18:19:58 EDT 2009 | dcell_1t
yesterday I tried with vision type 20, just defined the two pair of leads and error 1CA14003 came up, on flexa error help says the following: Cause: The Vision_type in part data is expressed using hexadecimal notation (??). If ?? equals 0A, 0B, 0C,
Electronics Forum | Tue Apr 21 20:58:11 EDT 1998 | Steve Gregory
Mike wrote: ...I did buy "Surfboards" built for this purpose but they averaged about $5.oo a piece, and when your running 20 trainers, and they still have to be soldered in place. $5 a test is kinda high when evaluating a 32 cent chip...(snip) Hi
Electronics Forum | Wed Sep 12 18:11:03 EDT 2001 | davef
First, what on the area array package are you analyzing � * Package cracking? * Cracked solder balls? * Er, what? Second, most failure analysis discussions consider dye penetration to be a non-destructive test, but then again most failure analysis
Electronics Forum | Fri May 26 05:54:40 EDT 2000 | Sal
For the past year now we have been printing adhesive with no real problems. Our printing ranges from 0603's to SOIC using a variation of aperture sizes and metal thickness foils. The crucial parameters are : aperture sizes : These obviously depend o
Electronics Forum | Wed Oct 06 12:03:12 EDT 1999 | Graham Naisbitt
| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n