Electronics Forum | Mon Jun 14 12:11:54 EDT 1999 | Earl Moon
| We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centre
Electronics Forum | Wed Jun 02 09:50:00 EDT 1999 | Earl Moon
| Hello all | I have a question concerning whether or not there is any special requirements to follow for assembly of a Polyimide PCB card. The customer has the following information on there documentation but since we have never built anything with
Electronics Forum | Wed May 19 13:13:20 EDT 1999 | Dave F
| We care currently running into problems during our plug via process: | At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.This is
Electronics Forum | Tue Mar 30 19:58:25 EST 1999 | Scott McKee
| We've been using a newly installed DI re-circulating system. | It's been a big headache. Mostly understanding what causes our resistivity to be unpredictable. I think I've got a handle on that part now. The system consists of a Carbon,HMR(chealet),
Electronics Forum | Wed Feb 10 18:26:04 EST 1999 | Earl Moon
| Has anyone had any experience in using SMT to mount an organic (FR-4, Getek) rider card onto an organic (FR-4, Getek) mother board? By SMT I mean the attachment of the rider card would be through pads directly to pads on the mother board. | | Than
Electronics Forum | Thu Jan 28 08:58:10 EST 1999 | Peet
| | i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe
Electronics Forum | Mon Jan 25 20:53:03 EST 1999 | Earl Moon
| Greetings, | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | Also, is there any danger of the pcb's giving off some kind of gas or vapour which can b
Electronics Forum | Tue Jan 26 19:30:36 EST 1999 | Nik
| | Greetings, | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | Also, is there any danger of the pcb's giving off some kind of gas or vapour whi
Electronics Forum | Tue Jan 26 23:05:30 EST 1999 | Thomas Clift
| | | Greetings, | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | Also, is there any danger of the pcb's giving off some kind of gas or va
Electronics Forum | Wed Jan 27 06:29:55 EST 1999 | Earl Moon
| | | Greetings, | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | Also, is there any danger of the pcb's giving off some kind of gas or va
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