## Electronics Forum: megger delta 2000 (Page 1 of 3)

### Re: pre-heat settings for wave solder - Hi Super K

Electronics Forum | Sun Jun 25 22:58:49 EDT 2000 | gary

thanks for the feedback....but what's your delta T and how will you know that you are within the delta T range ?...I think this is the main point of the above topic...can you elaborate more on how did your company get Delta T ? thanks and regards,

### Re: pre-heat settings for wave solder - Hi Dave F !

Electronics Forum | Tue Jun 20 22:52:46 EDT 2000 | gary

How to calculate the delta T ? What's the allowable range for delta T value? we r not calculating this in our process, instead we r maintaining the pre-heat temp which we measure from topside of the bd. Thanks in advance

### Single profile?

Electronics Forum | Tue Jan 25 20:15:04 EST 2000 | H.J. Kim

Is anyone out there using "single profile" on high mix production? Or would you recommand suitable reflow oven for that? Some oven manufacturers would announce for that. We have tested four different b'ds on their oven. Results(delta t) were 20 to 2

### Re: pre-heat settings for wave solder - Hi Dave F !

Electronics Forum | Wed Jun 21 23:47:28 EDT 2000 | gary

my topside preheat is 97 deg. C and my peak temp. is 230 deg. C with a duration of 4 secs. What would be my Delta ? I suppose 230 minus 97 is equal to 133 deg C...is that right? regards

### Re: Component Failure caused by Hot Air Knife

Electronics Forum | Wed Sep 20 17:06:23 EDT 2000 | jackofalltrades

On the Vitronics/Soltec Wave Soldering Machines, we have no problems with the hot air knife (called a "Select X De-Bridging Tool" by Vitronics). We have both Delta's and Delta Max's. We have used both air and nitrogen with no problems. When using a "

### Re: pre-heat settings for wave solder - Hi Dave F !

Electronics Forum | Fri Jun 23 09:01:01 EDT 2000 | Dave F

Gary: According to what I was try to say, you have read me correctly. NOW ... I would not pay much attention to my 100�C delta T babbling. It is in our work instruction for setting-up the wave, but no one pays attention to it. And I, nor anyone e

### Re: pre-heat settings for wave solder

Electronics Forum | Tue Jun 20 20:43:00 EDT 2000 | Dave F

Gary: Your flux supplier is the person for you to ask this question. For instance, the Lonco Superflo 26F that Jason was talking about last week has a preheat of 85�C to 110�C. * Thickness and number of layers of your board will affect you choice o

### Re: BGA assembly and inspection

Electronics Forum | Thu Sep 07 15:24:29 EDT 2000 | Murad Kurwa

Steven, Try http://www.document-center.com/home. You will find various standards for BGAs freely-available but not for free. BTW, I have never seen a BGA underfilled. Only FC and CSPs. The standards available will explain when to.....High CTE delta

### Re: pre-heat settings for wave solder - Hi Super K

Electronics Forum | Mon Jun 26 12:53:41 EDT 2000 | Michael Parker

I belive I once saw a picture of a Delta-T. It was in a very old Popular Science magazine. Some yahoo from Ohio wanted to put wings on his ol' tin lizzy. He also had some elaborate plans to convert his flat head V-8 to run off corn likker. I say chuc

### Reducing Wave solder DeltaT

Electronics Forum | Wed Jan 27 13:55:47 EST 2010 | patrickbruneel

Randy, Thank you for the acknowledgment. The IF2005Mz is a solvent based flux (not water soluble). I agree with you that the original IF2005M had a very narrow process window. In 2000 we modified the blending procedures and blending equipment which

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