Electronics Forum: have (Page 2410 of 3473)

HASL PCB non-wetting

Electronics Forum | Mon Mar 16 01:06:25 EST 1998 | Victor Ng

Dear all, Recently I have a problem of non-wetting at our wave soldering process. It appears only on the SMT pads for the chip components (at the solder side) of the HASL PCB. With all the same parameters on the wave soldering machine, i

Re: Entek coating

Electronics Forum | Wed Mar 11 11:05:06 EST 1998 | Earl Moon

| I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles mak

Re: Entek coating

Electronics Forum | Sun Mar 15 23:58:01 EST 1998 | Phill Hunter

| | I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles m

Re: Conformal Coating

Electronics Forum | Fri Mar 20 10:31:19 EST 1998 | Mick Jones

| I will be starting a conformal coating process soon, I am looking for any pointers on | 1) Best method for masking components, tape mask, liqued mask | 2) Which is best Spray or Dip? | 3) Compatiblity with no clean solder paste (flux residue) | I h

Re: Reflow oven feedback

Electronics Forum | Wed Feb 25 02:50:33 EST 1998 | Scott McKee

| I am currently evaluating some different reflow ovens | for a future purchase. The manufacturers we are | looking at are Conceptronic, BTU, and Heller. Any | feedback on these manufacturers would be welcome. | I am particularly interested in: | 1

Re: Fuji CP4 -3 (MC) feeder problems

Electronics Forum | Fri Apr 10 06:21:08 EDT 1998 | Ben Salisbury

| Has anyone running the cp4-3 feeders (MC type) in 8 by | 4 td flavour seen excessive wear on the aluminum body | caused by the tape leaf cover and tape leaf retaining | clip?? Sorry for the delay in posting to this one... I have in fact seen this w

Re: Wavesolder process characterization

Electronics Forum | Thu Feb 19 12:45:05 EST 1998 | Earl Moon

| I have an Electrovert Ultrapak 445 Wavesolder machine with 3 IR preheat zones and a single wave with omega wave. | I want to run a DOE (Taguchi) to determine the optimum settings for soldering both single-sided and | double-sided boards. Can any

Re: white dirty solder

Electronics Forum | Mon Jan 26 11:46:16 EST 1998 | Rin Or

| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct

Re: white dirty solder

Electronics Forum | Mon Jan 19 20:25:52 EST 1998 | Steve Gregory

| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct

Placement Program Control

Electronics Forum | Mon Aug 06 09:08:55 EDT 2001 | wbu

Dave, so what�s a good program anyhow? What about the setup configuration ? ... and who�s gonna say that your so optimized program will run after month and month while your equipment has gone through several aging and whatever processes? So we all


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