Electronics Forum | Sun Jan 09 19:37:15 EST 2005 | Bob R.
I'm just thinking out loud here with no experience to back it up, but I could see where you're trapping air or solvent filled voids inside the via by tenting from both sides. When you go through a heat cycle like reflow or wave solder you could be e
Electronics Forum | Wed Jan 12 10:05:37 EST 2005 | SuePH
Help!! Just got some new wave solder pallets in house. The pallets are 12 by 8 inches solid composite, with only two 1/2 inch by 1 inch spots cut out for the connectors. When they go over the wave, the solder wants to cling to the bottom of the pal
Electronics Forum | Mon Jan 31 13:48:22 EST 2005 | John S
We have a line using the DEK Pump Print process. We use a 3mm plastic stencil and print adhesive through it. The adhesive we use is Heraeus 955. We've struggled with adhesive contaminating the pads of our smaller components. The deposit isn't on
Electronics Forum | Wed Feb 09 12:31:54 EST 2005 | russ
We are not doing this right at the moment but I have done it with great success. Of cource it depends on your pad layout we have a 20 mil gap in between pads, we printed at 10 mil wide with a 5mil stencil. I will try to find the glue we used, I kno
Electronics Forum | Wed Feb 09 21:19:03 EST 2005 | Mrduckmann2000
Russ, We can not use a wave pallet, already went that route. We have parts next to the thru-hole pins and between thru-hole pins. I am going to try an experiment in the next day or so with solder mask. I plan to solder SMT parts on the back of se
Electronics Forum | Mon Feb 14 09:22:13 EST 2005 | vortex
Recently I have started refurbing my companies extremely neglected Hollis TDL wave solder machine. After doing a general cleaning, de-fluxing, and de-greasing I have all the mechanical components back in working order. What i am left with is the elec
Electronics Forum | Wed Jan 25 12:06:26 EST 2006 | fredc
Doug, If you saw our calibration tool (Blue) it is for setting the head shafts off the machine. It probably is too expensive for small shops with a few machines to maintain. We sold them to three plants that were maintaining 60 or more machines. The
Electronics Forum | Thu Feb 24 23:01:30 EST 2005 | smtuser1234
One other thing to check is your PEC camera. Universal uses a jig to calibrate this camera but you could check it using this method. 1.Run about ten 0402 parts on tape with the PEC camera off and check placement. If the placement is off change the x\
Electronics Forum | Thu Feb 17 03:35:07 EST 2005 | siverts
Good day everybody, I am looking for a number of portable vac-operated pick-up tools; to be used by operators, so they can pick QFP's/BGA's etc. out of matrix trays and also to put components back in the trays. It should be slim, ESD-safe and powere
Electronics Forum | Thu Feb 24 16:14:46 EST 2005 | davef
Rob: Why aren't the board houses over there going to lead-free HASL [not that HASL is the most wonderful thing on the planet]? What's the price delta on an unit basis for a x-HASL, now imm Ag board? Anyhow back to the point, so, you're proposing t
