Electronics Forum | Tue Aug 17 09:43:59 EDT 2021 | lay1014
Application of vacuum technology VACUUM FURNACE Metallurgical industry: The vacuum technology used in the metallurgical industry includes molten steel vacuum processing, vacuum melting, vacuum induction melting, induction shell melting, vacuum arc re
Electronics Forum | Sat Sep 18 13:05:57 EDT 1999 | Brian
| | | | | | Dave, I'll respond by paragraph: | | | | | | | Brian: | | | | | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like habanero slath
Electronics Forum | Sat Sep 18 14:37:00 EDT 1999 | Earl Moon
| | | | | | | | | Dave, I'll respond by paragraph: | | | | | | | | | Brian: | | | | | | | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like
Electronics Forum | Mon Sep 11 04:10:46 EDT 2000 | Jim Arnold
I spent 25 years operating my own hybrid shop working with surface mount components, soldering materials and procedures. Dealing all the while with it's associated surprises and problems such as yours. Now-a-days I get paid to investigate and attemp
Electronics Forum | Fri Oct 13 17:21:05 EDT 2000 | Jason Nipper
A few weeks back we experienced a wave process problem where we received deposits on our pcb. At first we though it was dedrites but after an outside analysis of the deposits they were found to be tin. We have tried to remove the deposits with brus
Electronics Forum | Tue Oct 17 12:15:19 EDT 2000 | NLykus
Dave, Current process is Insert through hole components topside Dispense SMT glue Place SMT components bottom side Glue cure Insert 1 through hole component by hand Wave Wave temperature is 480oF Topside preheats in D.O.E ranged from 99oc to 108oC
Electronics Forum | Tue Apr 11 20:23:19 EDT 2000 | Dave F
Ashok: You're still goin' down that ol' ESD road aren't ya bud? Why do you need the boards to be dry? Conformal coating? Hey wait a minute, are you one of those no-clean people? Er zis related to the Kapton tape res fandango? Anywho, be careful
Electronics Forum | Tue Feb 27 11:28:08 EST 2001 | fkurisu
Hello Mark, It is possible that SolderMask, Inc. could selectively remove the existing solder mask, clean and reapply a Photoimageable solder mask to the BGA area. Mostly likely the mask on your boards is a Liquid Photoimageable Solder Mask (LPIS
Electronics Forum | Thu Mar 22 17:37:06 EST 2001 | davef
Hey!!! Watch it!!! I don�t want to get you believing too much of this stuff. But if you bought that, listen to this � some circuits are so critical with that skin effect stuff that they use silver as the top level solderability preservative. Turn
Electronics Forum | Wed Mar 21 20:40:28 EST 2001 | dblsixes
We are building a monster ... Dimensions are 10" x 7" ... 12 layers ... A Logic Assembly with a Power Supply all rolled into one ... The Power Supply is in one section of the board, the logic in the other section ... The Power Supply obviously has a
