Electronics Forum: plating (Page 51 of 252)

Re: Solder Iron/Tip Problem!

Electronics Forum | Thu Jun 17 16:18:22 EDT 1999 | Earl Moon

Has anyone had problems with the Weller MT 1500 IRON/TIP solder station? Please advise your problem and resolution. ddj 6/16/99 I don't like to use the needle tips (MT2 series), but the rest of the tips work fine. The MT2

Re: Baking PWB's

Electronics Forum | Mon May 24 10:45:04 EDT 1999 | John Thorup

Can anyone help me with the correct baking cycle for removing moisture for PWB's. These are 10 layer double sided SMT. Thank You R. J. Klein Wassink in Soldering in Electronics states - 16 hours @ 105C or 40 hours @ 80C in a ventilated oven

Re: 2% silver solder paste

Electronics Forum | Thu Apr 15 08:21:47 EDT 1999 | Terry Keen

We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have to

Re: 2% silver solder paste

Electronics Forum | Thu Apr 15 09:45:34 EDT 1999 | Terry Keen

We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have t

Unwetting leads of Palladium Plated Pins

Electronics Forum | Mon Mar 01 11:03:51 EST 1999 | Dennis Xiong

Hello! SMT professionals, I do not know if anyone posted this question before. Last week, I reflowed our newly designed thin Rigid-Flex pcb with 0.040" thickness. I found all of pins of a TQFP48 ic did not get wetted. I could see on the heel side o

Unwetting leads of Palladium Plated Pins

Electronics Forum | Mon Mar 01 11:03:22 EST 1999 | Dennis Xiong

Hello! SMT professionals, I do not know if anyone posted this question before. Last week, I reflowed our newly designed thin Rigid-Flex pcb with 0.040" thickness. I found all of pins of a TQFP48 ic did not get wetted. I could see on the heel side o

Re: Cpk measurement

Electronics Forum | Thu Jun 18 19:17:16 EDT 1998 | Ben Salisbury

I am currently using some pick & place equipment and would like to measure their cpk using a glass plate and glass "components" with vernier scales. I have seen these kits but am trying to track a supplier down in UK/Europe. Any help is much appr

Excess Flux in uBGA rework

Electronics Forum | Tue Sep 25 14:25:30 EDT 2001 | davef

Points in response are: * Microstencils work fine with paste, although they are a little fussy to use. * Never have used microstencils for flux. * Like Hussman, we dab the uBGA into a puddle of tacky flux and then place it on the board. * On contro

672 PBGA on PC Card .015 thick pcb

Electronics Forum | Mon Oct 08 23:17:48 EDT 2001 | Brad Arnold

We are trying to produce a PC Card bus assembly with a 672 pin BGA on one side. These pcb's are .015 thick. I believe the ball pitch is .5mm. The pcb's are plated with white tin. The pcb's are in a 1 X 3 array. We had 2 plates with appropriate cutout

Preheating a board with metalic coating on both sides

Electronics Forum | Wed Jul 31 17:25:39 EDT 2002 | sueph

Dave, thanks for the reply. These boards have metal plating covering 99 percent of both primary and secondary surfaces. The only places without the metal plating are the extreme outer edges and about an 1/8 inch surrounding the plated holes. We do


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