Electronics Forum | Mon Sep 29 23:46:51 EDT 2003 | daman
Hello everybody, We have a new product having a lot of open gold area. solder splashes during the reflow is a pain in the... Its an extremely small PCB and kapton taping is not an option. Stencil is at 10% reduction, Cleaning after every cycle. Reflo
Electronics Forum | Tue Sep 30 20:05:34 EDT 2003 | afm
Does alloy 42 lead frame on a QFP100 make lack of coplanarity (let's say 2 mils), a critical factor to have non-wetted leads? Lead coating is tin lead 90/10. afm
Electronics Forum | Wed Oct 01 15:06:50 EDT 2003 | davef
You're thinking correctly. Concentrate your recipe development efforts by profiling directly on the pads [that some fine designer forgot to thermally isolate properly] of those pesky corner leads that don't solder well.
Electronics Forum | Wed Oct 01 10:12:58 EDT 2003 | russ
Call Samsung and see if they have a theory of operation. Otherwise the manuals have a lot of info in them as to how they work. Russ
Electronics Forum | Wed Oct 01 13:42:00 EDT 2003 | rmurtuza
any one know of lead free seminars or training sessions tuned towards the training of implementing lead free processes on the shop floor
Electronics Forum | Tue Oct 14 11:27:08 EDT 2003 | smokejumper
I have not seen anyone mention the Web inerface to a Mydata. In Tpsys 2.3 and higher there is a graphical version of the package list. This also lets you search the database by number of leads on a device.
Electronics Forum | Fri Oct 03 05:27:24 EDT 2003 | kanwal324
the puspose of solder mask is to prevent exposure of cu tracks to atmosphere. the lesser thickness can effect the performance of board but it only depends on its application. if you are making telecom board then its not good to use the board.
Electronics Forum | Wed Oct 01 23:40:38 EDT 2003 | bradlanger
I was wondering if anybody could tell me what a good clearance would be for board designs to allow for the use of inline equipment? My company currently runs a batch line but I want to make sure we are designing properly for inline if the need arises
Electronics Forum | Thu Oct 02 06:26:57 EDT 2003 | loz
Hi all. Can anyone offer any feedback from prior experience of I-pulse M1 SMT mahcines. Usual stuff, ie capability strengths, weaknesses etc.Also any quirks in the platform? Thanks in advance. Loz
Electronics Forum | Thu Oct 02 18:10:34 EDT 2003 | jersbo
we do a 2 person verification as well.. and record who changed and who verified.. Extra reels are setup before the run to minimize machine downtime..
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