Electronics Forum | Fri Aug 30 16:25:21 EDT 2002 | davef
Imm silver holds-up to multiple thermal cycles very well. The things, we guess, are happening to make imm silver tough to solder after heating and sitting are: * Oxidation of the silver. * Reduction of the co-deposited organic anti-tarnish [used in
Electronics Forum | Fri Nov 22 10:38:30 EST 2002 | slthomas
The follwing is from the Technet archives, per IPC's Jack Crawford. I dug it up during some investigation of a supplier's issues with humidity in an Asian plant: There is support for this in IPD-HDBK-001 w/Amendment 1 Handbook and Guide to Suppleme
Electronics Forum | Fri Sep 26 21:06:28 EDT 2003 | adlsmt
Ken, I am still negotiating a possible deal with the company I referenced, therfore I will not mention the name now. If it falls through I will let you know. However I have made it clear to them that their second user atitude stinks and is still sway
Electronics Forum | Sat Jun 12 00:34:00 EDT 2004 | kanwal324
Hi ! The main problem being faced currently is formation of solder balls - to be precise, these are micro solder beads generally found attached with bodies of SOTs, Chip Caps, Chip Resistors, between pins of SOICs (50 mil) - lying on PCB surface,
Electronics Forum | Mon Jun 21 11:14:25 EDT 2004 | exmaintenanceleader
Dear Kanwaljit Singh, my opinion is following: 1)solderpaste type is ok - usual (alpha-metals has this problem inside the paste paste- holder problem) - what do the operator when production change -clean well the stencil holes!! no visible rest on
Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef
Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl
Electronics Forum | Tue May 23 17:49:07 EDT 2006 | flipit
Hi, Ok I have some numbers for you on my process. For the last 2 years we have been placing 4 BGA on a 2" X 5" X 0.062" PCB. The BGAs are 16X16 256 ball, 15X11 165 ball, 8X8 64 ball, and 26X26 456 ball. The 8X8 is 0.8mm pitch and the others are 1
Electronics Forum | Wed Sep 13 20:04:37 EDT 2006 | mika
Hi, We have a customer that want us to produce a single sided 0.4 x 100 x 50 mm size RoHS pcba approx 1000 of them. The board only contains three 2.54mm pitch Non P.I.P, SMT-connectors. We have never produced such a thin pcb:s before. We are thinkin
Electronics Forum | Fri Apr 20 14:02:26 EDT 2007 | JJ
RA, First, define "medium scale budget". Aside from that, I have used many systems, listed in my order of preference: 1. SRT1100 - superior board support - very reliable 2. ERSA IR550A - unique flexability due to infrared heaters 3. Metcal APR5000 -
Electronics Forum | Thu May 31 12:58:49 EDT 2007 | wavemasterlarry
Listen, why are you guys comparing air conditioning to wave soldering? There is no way your house will get that warm, unless it catches fire - I would know cause i smoke in bed way too much. Anyway, my two soltecs run 16 hours a day. on 3rd shift
