Electronics Forum: production (Page 601 of 870)

Re: Proflow of DEK screen printer

Electronics Forum | Sat Sep 04 06:01:49 EDT 1999 | Earl Moon

| Dear sirs, | | If you have experienced Proflow of DEK screen printer, please let me know the details of it. | | Best regards, | | Jame Bond | | James, Stir, don't shake is not good advice for cleaning proflo heads. This thing works great, bu

Re: Proflow of DEK screen printer

Electronics Forum | Sat Sep 04 07:11:34 EDT 1999 | JohnW

| | Dear sirs, | | | | If you have experienced Proflow of DEK screen printer, please let me know the details of it. | | | | Best regards, | | | | Jame Bond | | | | | James, | | Stir, don't shake is not good advice for cleaning proflo heads. Th

Achieving High Yields with CSP

Electronics Forum | Thu Aug 26 10:28:07 EDT 1999 | Stuart Adams

What are the key steps to achieving high yield with CSP ??? (We are trying qualify vendors for volume fab/assembly of some products which use several CSP devices on each side of the board. (Some with 0.5mm ball pitch)) Looking through the forum I

Re: Achieving High Yields with CSP

Electronics Forum | Fri Aug 27 13:24:19 EDT 1999 | swsng

| What are the key steps to achieving high yield with CSP ??? | | (We are trying qualify vendors for volume fab/assembly of some | products which use several CSP devices on each side of the | board. (Some with 0.5mm ball pitch)) | | Looking throu

Re: Tooling pins

Electronics Forum | Tue Aug 24 15:06:06 EDT 1999 | John Thorup

| | I am looking for a source of tooling pins (various diameters) which can be easily attached (ie. taped) to pieces of FR-4 stock to allow for quick and cheap fixtures to run in my smt machines. I've seen these in the past where the pins are attach

Thermal Stress in Reflow

Electronics Forum | Mon Aug 23 10:34:09 EDT 1999 | Greg Jones

I am looking for a rule of thumb regarding the maximum ramp standard components (chip capacitors) can tolerate without failure during the reflow process. The standard seems to be 3C\second, but this figure is generally derived from the average ramp

Re: Trays or Reels?

Electronics Forum | Tue Aug 17 22:51:32 EDT 1999 | KEVIN SIMPSON

| | Does any one have any idea which is usualy more expensive, to get components on Reels or in Trays ( I mean large components ofcourse). | | What is price diffrence percentage ? | | | | practicaly, is one method is prefered to the other? | | | |

Re: Heatsinking

Electronics Forum | Wed Aug 18 13:54:01 EDT 1999 | John Thorup

| Atlthough not strictly surface mount, I am sure that amongst the experienced players out there someone will have some answers for me. | Does anyone have any experience of "phase change" heatsink materials. These are solid at room temperature and th

Re: no clean rework

Electronics Forum | Wed Aug 18 15:52:21 EDT 1999 | DENNIS FOWLER

| | | Gian | | | | | | You alarm me when you talk of white residues in a "no-clean" process. This should not happen. It sounds like you have compatibility problems between different residues and/or a poorly polymerised solder mask. | | | | | | Ther

Re: oven ventilation requirements

Electronics Forum | Thu Aug 05 10:13:44 EDT 1999 | Boca

| We are installing a new reflow oven and I have been told that we do not need to vent the exhaust out through the roof since we have a false ceiling. All that is required is to vent above the false ceiling and that the air exchange is great enough t


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