Electronics Forum: soldering (Page 1791 of 2099)

5 zone oven profile

Electronics Forum | Tue Apr 05 15:32:49 EDT 2011 | grahamcooper22

It is one of our pastes...Almit LFM48 W TM-HP, a high reliability no clean solder paste based on SAC305 with a size 4 powder. It's a paste that works so well we have thousands of users of it worldwide. Why are you using SN100C alloy paste ? I imagin

Solder beading with PCB from different fab

Electronics Forum | Thu Mar 31 20:16:31 EDT 2011 | tkirk

We recently decided to try using a different source for our bare boards to save money. On two different batches of PCBs now from the new source, we are seeing beading including some serious enough to short out underneath 0805 parts. We have never re

SMT LIne Production Rate

Electronics Forum | Wed Apr 06 08:18:19 EDT 2011 | don7888

Hi Has anyone managed to accurately produce a spreadsheet or formula that will accurately calculate the amount of boards your SMT line will produce an hour. I work in a high mix low volume industry and we are constantly taking on new jobs but have n

Tant Cap fell down after SMT

Electronics Forum | Thu Apr 07 04:32:13 EDT 2011 | jacki

Dear All During SMT process, some Tant caps were fell down without touching Epoxy . I found the problematic Tant Termanations were bended with gap. So I called to Vender and expalined this gap but the answer was the gap was within their standard and

Ion Chromatography (IC) qualification

Electronics Forum | Thu Apr 14 09:39:41 EDT 2011 | blnorman

ROSE has the advantage in that it does have a specific acceptance criteria (J-STD-001), whereas the IC does not. ROSE allows the test to be run at ambient or at an elevated temp, IC requires the component/board/assembly to be "cooked" for 1 hour @ 8

Nub bying p&p, stencil printer and reflow.

Electronics Forum | Wed Apr 13 07:50:10 EDT 2011 | jebs

Hi. I've been looking for SMT machines and have a budget close to 100k total on a stencil printer, p&p + feeders and reflow owen. Witch machines would you choose with this budget? Have any one of you heard of evest? http://www.evest.com.tw/product.h

Mirtec MV-7L lifted lead detection

Electronics Forum | Thu Apr 28 17:02:07 EDT 2011 | grasso1976

Has anyone had success utilizing the lifted lead/ height checker feature on a Mirtec MV-7L. We recently had two separate events where the machine did not detect a lifted lead using the ic/bridge inspector. The soldering results came back with out def

Electroplate Touch up

Electronics Forum | Wed May 04 06:06:34 EDT 2011 | clampron

Good Morning, I have been working with a company that has a selective electroplate touch up system from Rapid Electroplate. They have used this for repairing gold electroplate. Scratches and in some cases, replating pads that had been contaminated w

How to choose a new solder paste

Electronics Forum | Fri May 27 05:16:28 EDT 2011 | aj

Hi, There are quite a few suppliers so you could have a lot of work on your hands trying them all. Do a bit of research finding out what paste all the big guns use? they spend a fortune doing evaluations etc But you should get at least 3 different

DPAK drop @Second reflow

Electronics Forum | Tue May 31 22:40:24 EDT 2011 | bejrananda

HI All, Please kindly advice me, I have project that it has DPAK part (MPN:SUD25N15-52 E3 Plating:100% Sn matte)which locate on bottom side (1st reflow), Good wetting for 1st reflow.. but .. when I run Top side (2nd reflow).I found that this D


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