Electronics Forum: pinhole and epoxy (Page 4 of 6)

Re: Discoloring of Soldermask and silkscreen

Electronics Forum | Tue Apr 13 23:08:56 EDT 1999 | Jeff Sanchez

| | | Netters, | | | | | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | | | | | 1. Kester 293 no clean | | | 2. 2.1 C/s for 30s to 150 C | | | 3.

Re: Discoloring of Soldermask and silkscreen

Electronics Forum | Wed Apr 21 00:35:31 EDT 1999 | Scott Cook

| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185

Differences between screen and stencil printing

Electronics Forum | Thu Dec 16 15:00:20 EST 2004 | glaucon

Simple differences. Both processes require a very similar machine platform, controlled motion, vision fiducial recognition and alignment of a substrate (PCB or hybrid ceramic) to the "image", the image being either a stencil (hence stencil printing)

Re: Epoxy printing and wave soldering on 0603 and 0402 components

Electronics Forum | Wed Jul 14 21:34:16 EDT 1999 | karlin

| | | | | Hi, | | | | | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants) | |

Re: Epoxy printing and wave soldering on 0603 and 0402 components

Electronics Forum | Tue Jul 13 14:19:00 EDT 1999 | JohnW

| | | Hi, | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants) | | | | | | Sec

Re: Epoxy printing and wave soldering on 0603 and 0402 components

Electronics Forum | Tue Jul 13 14:25:57 EDT 1999 | Earl Moon

| | | | Hi, | | | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants) | | | | |

Re: Epoxy printing and wave soldering on 0603 and 0402 components

Electronics Forum | Thu Jul 15 14:38:38 EDT 1999 | JohnW

| | | | | | Hi, | | | | | | | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants)

Pls recommend the Kapton tape&Aluminium tape and Epoxy supplier

Electronics Forum | Sun Sep 12 21:08:07 EDT 2004 | mksslcheng

Could someone recommend me the manufacuter who is produce Kapton tape or Alum. tape or Epoxy ,I want to profile wave soldering .You would be appreciated if you can provide its website .

Pls recommend the Kapton tape&Aluminium tape and Epoxy supplier

Electronics Forum | Tue Sep 14 08:15:07 EDT 2004 | davef

Alumininum tape suppliers can be found by searching the fine SMTnet Archives.

Re: 2 questions: via tenting and annular ring terminology.

Electronics Forum | Wed Jul 07 09:47:41 EDT 1999 | Peter Brant

| | Q #1) Is it more reliable to have the mask tent over the vias or risk getting vias half filled with solder? These are vias with an .020" hole and .040" or .050" pad. WIth regards to this question, and scott's follow up, I have used the "epoxy me


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