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Gold versus HASL

Electronics Forum | Fri Sep 13 14:35:03 EDT 2002 | davef

Thanks Bernard. On your profile: Adding gold to your solder alloy will increase the liquious temperature. So slowing your reflow oven conveyor is a perfectly reasonable approach, especially for pads with low surface area. We don't even notice a di

Solder and flux

Electronics Forum | Tue Oct 22 17:23:35 EDT 2002 | Yannick

Hi, I wondering if someone know the anwser to that. I'm using a solder paste 63/37 and on the solder joint we have a tiny little layer or flux who is like crystalin. I try to play with my profile the get it off but I don't get much success. So D

Wave soldering profiling

Electronics Forum | Wed Jun 11 16:41:58 EDT 2003 | MA/NY DDave

Hi, All seem good answers and food for thought. Additions you probably know. Flux Supplier Application Notes/Data Sheet. Many of them have run experiments to tell you what works for their flux on various machines. They might even give you optio

Wave soldering profiling

Electronics Forum | Thu May 06 17:17:59 EDT 2004 | Bruce

I am glad this thread is still alive as I have a concern. I have just entered the wave soldering business after many years in smt. After wave I am getting icicles or flags on my component leeds. My temps seem to be all with in spec as does my NC flux

Use of Pb-free Components

Electronics Forum | Thu Mar 18 23:04:49 EST 2004 | martz

A lot of component vendors already shifted to Pb-free products but our process is still using 63Sn/37Pb solder paste and SMDs. What would be the result if we introduce some Pb-free components to our current process (i.e without changing the reflow p

Does this forum covers BGA's

Electronics Forum | Fri Feb 18 17:57:46 EST 2005 | Grant

Hi, The normal electronic components you purchase should have lead free variants. Also, all solder paste manufacturers have lead free solder pastes, so you just need to get the paste specification, and then re-profile your oven for it. Temps are hig

electrically conductive adhesives

Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey

Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w

Exhaust on Reflow Oven

Electronics Forum | Tue Jun 21 16:54:37 EDT 2005 | slthomas

I'm inclined to believe along with others that if you don't smell it, and the flow rate is consistent (hence, your profiles aren't suffering from fluctuations in temperature due to fluctuations in circulation) you're probably OK. It does beg the que

Alum Electrolytic Caps

Electronics Forum | Mon Oct 10 20:06:59 EDT 2005 | nuezmaster

Does anyone have any experience running Aluminum Electrolytic Caps with a SAC305 alloy. The profile for the solder calls out a peak temp of 235-255C and 60-75 seconds above 217C. Most can cap manufacturers are calling out for 230-245c max for no lo

SMD weights

Electronics Forum | Tue Dec 06 16:20:48 EST 2005 | jsloot

Does anyone have a list of SMT components with their weights? For instance, a PLCC64 pin = X grams. I am not even sure if such information is really valid but it would be interesting to know when developing a reflow profile for convection ovens on a


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