Electronics Forum | Fri Jul 23 04:27:59 EDT 2004 | greg york
Many trials conducted so far from single sided to Mixed technology dual wave with our LFB227/S 0.3Ag silver Lead free. Results are excellent, some say better than 63/37. One continueing problem though is the age old area of undercured resist and runn
Electronics Forum | Tue Jul 27 11:16:40 EDT 2004 | carterhoward
Hello , I agree with the solder ball theory, we used to have an issue with high humidity and it produced the results you�re describing. Our solution to this since adding dehumidifiers was too costly was to increase the quantity of intake ducts for t
Electronics Forum | Thu Aug 12 14:55:08 EDT 2004 | johnw
Hi guys I havnt been on for a while so its nice to be back been working in europe mostly Fuji CP6 skewing rnets Marcels comment is the closest rnets are a problem as said before the main areas are 1 A good assmbley shape is a must with 30% defaul
Electronics Forum | Mon Aug 16 13:18:46 EDT 2004 | davef
You bet our reponse changes. Q2R: Hard gold thickness is 4 to 10 u" for Au and 300 to 400 u" for nickel A2R: This is a hard gold spec?? It looks like a ENIG spec. Although, the Ni is quite heavy, 150 uin is sufficient for most applications. The gol
Electronics Forum | Fri Aug 13 18:38:47 EDT 2004 | russ
Your paste manufacturer will have the best guidelines for you. Different paste types and manufacturers sometimes/usually require a little bit different setup. I would also contact your printer manufacturer. As far as stencil concerns the larger/be
Electronics Forum | Sat Aug 14 08:43:17 EDT 2004 | davef
Russ makes good points. Your printer supplier can give good advice on machine setup also. We know we're printing well when: * Paste at least as big in diameter as your thumb is rolling across the stencil * Paste is filling the apertures * Squeegee
Electronics Forum | Fri Aug 20 09:06:14 EDT 2004 | russ
I have never used the Vitronics but have pretty extensive experience with the Electra as well as Ultra-Pak and econ-pak from electrovert. I ahve been impressed with these machines for their durability and ease of use. A laminar flow with the rotary
Electronics Forum | Tue Aug 24 05:02:55 EDT 2004 | dj_jago
Hiram, We have just had the same decision to make! I was at Vitronics Soltec, Holland about 4 weeks ago doing trials for Lead Free. The Soltec Delta machine was ultimatly chosen over price verses performance. Both machines are very capable but
Electronics Forum | Thu Sep 02 10:41:41 EDT 2004 | dj_jago
Other way around Dave. We decided that the Delta had more in common with the Electra rather than the Vectra, the Electra being much more expensive. For example, we wanted 3 preheat zones for lead free and this would mean an exernal fluxer unit if
Electronics Forum | Wed Aug 18 06:34:57 EDT 2004 | Bernard Mulcahy
Hi , Our hardware designer wants to introduce a board with a straddle - mounted SMT connector, AMP part number 84487-1 and FCI 71292-001. This is an 80 pin connector that slips over the edge of the PCB and has 40 SMT pads on either side (at least thi
