Electronics Forum: soldering (Page 1584 of 2100)

Wave Solder Temp Verification IR GUN or Temp Dots??

Electronics Forum | Wed Aug 24 09:21:45 EDT 2011 | blnorman

We always used a MOLE on our wave ovens. From what I know of temp dots, they let you know if a temp has been exceeded. The IR gun we had also had the limitation that the further away from the target, the broader the area being analyzed. Guess it b

Flux suppliers

Electronics Forum | Sat Sep 03 12:54:05 EDT 2011 | waveroom

I have sold them all and you are correct. Over the last five to eight years there has been a down turn in customer support from the big two. I would suggest Aim solder out of Rhode Island. Their service is excellent, they do provide on site assistanc

BGA pad size too large??

Electronics Forum | Wed Sep 07 00:28:04 EDT 2011 | woodsmt

I have identified a Board design issue and having trouble convincing others of my findings. I have a BGA (Sn63 balls, +1500 IO, 0.6mm ball, 1mm pitch, with heat spreader plate)that has a high incidence of solder shorting on the corners. The board i

Reflow help needed, Hotflow 5

Electronics Forum | Fri Sep 09 21:09:20 EDT 2011 | hegemon

Wow, a lot of questions here...and you are definitely doing some "tough sledding". To the point. If you have 3 - 22" zones you'll have to calc your belt speed and temperatures to match the solder paste requirements with regard to flux activation an

Solder Defects in Hast Board

Electronics Forum | Mon Sep 12 07:03:26 EDT 2011 | mosborne1

Can you post a picture? There are many reasons why they probably don't fill. There needs to be a larger surface area on the ring on top. There could be debris in the via holes from not properly drilled or cleaned before plating process. Your customer

QFP footprint -extended outside pad?

Electronics Forum | Fri Sep 16 14:51:06 EDT 2011 | isd_jwendell

I recently did a layout for a Freescale accelerometer and the mfg recommended pad layout did something similar. They where very specific in the pad layout dimensions. They stated the reason was "With the correct footprint, the packages will self-alig

Reworking BGA's

Electronics Forum | Thu Oct 13 17:41:28 EDT 2011 | dmiller

I guess I'll be different that the rest here. To stay consistent, I feel the best way is to use stencils to apply paste to the board first. We put paste on the board at SMT to solder them on initially. Then not when they get reworked? Why not tak

Soldering Specification Needed

Electronics Forum | Fri Sep 23 16:39:00 EDT 2011 | action_101

The small investemnt of purchasing the IPC-610 manual will pay for itself very quickly. A brief description of the two classes in a few words would be the following: Class II - a well built product with reasonable expectations for both the manufactur

Soldering Specification Needed

Electronics Forum | Mon Sep 26 02:17:21 EDT 2011 | Jacki

Hi Minda Customer is always right and u hve to follow their standard if they dun agree with ur company quality standard. Even u follow IPC standard, u can't do nothing unless ur customers agree with it. B4 get orders, ur sale and customers must dis

Soldering Specification Needed

Electronics Forum | Mon Sep 26 10:58:37 EDT 2011 | dyoungquist

Basically in loose general terms: IPC class 1 is for consumer products that you discard when they break. IPC class 2 is for industrial products that last longer than class 1 products and you can repair when they break. IPC class 3 is for military


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