Electronics Forum: flux and preheat and leadframes (Page 1 of 5)

Wave flux and profiling

Electronics Forum | Sat Dec 16 08:23:11 EST 2006 | pr

The "Wave optimizer" is a little pricey but is easy to use, gives instant feedback (display on the unit as opposed to hooking it up to a computer)and will give feedback on the waves, as well as preheat. They will send you a unit to trial for a week o

Evalution on solder paste and spray flux

Electronics Forum | Thu Jan 27 11:23:45 EST 2005 | russ

Well first off I wouldn't evaluate paste for a wave process. I would use solder bar instead. Flux - top side fillets and no shorting on the solder side, does it clean well after processing if using water soluble flux. How wide is the process win

Solder Balls and Humidity

Electronics Forum | Fri Aug 24 12:39:59 EDT 2007 | hussman

I would say no, unless your machine is in extremeconditions. You may want to check your flux / preheat out as well. If you are leaving a lot of flux on the board at wave, it may be boiling - which can cause solder balls.

SAC305 and Selective Soldering

Electronics Forum | Wed Sep 18 14:12:40 EDT 2013 | pjchonis

Hello Bachman. SAC305 is the most common lead-free solder alloy, not only for wave soldering but also selective. Most of our selective customers (especially automotive) are using SAC305. What is more important than the alloy to consider is the flux

Solder Balls and Humidity

Electronics Forum | Tue Aug 28 11:12:23 EDT 2007 | grics

This is what I was thinking, but I am being beat up pretty badly by the selective solder. Ambient temperature is anywhere in the the neighborhood of 76 - 80 degrees F. I am not sure of the RH, but I wouldn't think that would be my issue... One of

SPC and Wave

Electronics Forum | Thu Jul 14 11:52:16 EDT 2005 | davef

Sure you can use SPC charting on the wave setup parameters to warn of impending problems. Examples of useful points of analysis are: * Dwell * Temperature * Pot analysis Certainly there's a range of other process controls that could be monitored.

SPC and Wave

Electronics Forum | Thu Jul 14 16:05:55 EDT 2005 | russ

Good answer slthomas! This has got to be the biggest misconception out there. To perform SPC on a wave process you must first perfrom DOE to determine the critical parameters and or control limits. For example you will need temp reading devices tha

Soldering robot and solder balls

Electronics Forum | Wed Jun 21 11:30:27 EDT 2017 | ranap121212

but we do not have laminate preheating on robots. There is no flux separate application, the flux is in the soldering wire

Wave Cassettes and Heat convection

Electronics Forum | Mon Jan 15 13:12:18 EST 2007 | realchunks

So others can solder the same board and part but you can't. Dipping the legs in flux doesn't help. Then it's either your pre-heat or wave. Measure your pre-heat and compare to others or flux mfger. Do you have chip wave or something like an Omega

Solder beads and wave soldering

Electronics Forum | Thu Jul 06 12:52:35 EDT 2006 | samir

..and he can put the flux in and keep it a secret too from his customer.. RSS profile on wave?? I never heard of a soak zone for wave preheat...you may be burning off your activator..hence, the beads. For wave preheat, your main goal is to ramp up

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