Electronics Forum | Tue Jun 12 20:47:41 EDT 2001 | ianchan
Hi mates, anyone done SMT process for micro-lead frame (flip-chip)before? Appreciate any process control caution points from the experienced guys (yonder the deep blue seas) who have done this product before. 1) pcb thickness 2) pitch-to-pitch (co
Electronics Forum | Wed Aug 02 02:31:11 EDT 2006 | CHIPshooter
I have seen 0402 inductors that look identical to 0402 caps, come in embossed reels, but the pitch on the tape was 4mm. Im not saying they dont exist, but i have never seen an 0402 component come in an embossed tape with a pitch of 2mm. everything i
Electronics Forum | Tue Aug 10 09:09:39 EDT 2004 | mattkehoe
wash->ssd top->wash->sticky flux bottom side->place smt components->reflow->wash->sticky flux top side->place topside smt components->reflow->wash) ssd is basically the process of applying solder paste to the pcb with a stencil and the solder reflowe
Electronics Forum | Wed Sep 01 12:58:42 EDT 2010 | scottp
A good paste will print fine up to 5 in/sec or so. They key, as mentioned, is to get the pressure right for a given squeegee speed. If the squeegees aren't giving a clean wipe then you'll see huge variation in print volume which can lead to shortin
Electronics Forum | Tue Jun 15 04:55:00 EDT 1999 | Brian Ellis
The other answers on this thread are realistic but it also depends: a) on the quality and finish of the components and PCB (including, of course, solderability) b) the flux type (I would expect lower defect rates with water-soluble than with the less
Electronics Forum | Thu Jun 17 10:20:15 EDT 1999 | Brian Wycoff
| | | Dear All, | | | | | | We are having a big debate over what is the industry standard in DPPM on the wave sodlering process. is a DPPM of about 800 satisfactory. As per our big bosses it should not be more than 50 DPPM. Is the figure realistic
Electronics Forum | Fri Mar 03 07:03:57 EST 2006 | Mity-C
Good Morning All, We have a Mydata shop. 5 lines in all. We are also using a mix of old style and Agilis feeders. The claim that you will not loose parts in loading is based on keeping the clip with the reel. This is the whole basis of the Agilis co
Electronics Forum | Wed Dec 14 12:48:21 EST 2005 | grantp
Hi, A second hand TP9-2U MYDATA could be picked up very low cost, however it will only load a single component at a time, which could be ok for your jobs. However if your running 0402, I am not sure if that model will do it accurately. Your machin
Electronics Forum | Thu Jun 04 12:22:12 EDT 1998 | John Allan
| | | Hello: | | | BACKGROUD: SMT components soldered on the top-side of boards that also require wave soldering have the potential to reflow during wave soldering. Reflowing these components during wave soldering is not good. It can cause cold jo
Electronics Forum | Mon Apr 23 15:44:31 EDT 2007 | flipit
Steve, You read it the same way I read it. Some of my coworkers thought that the 600 micron and under spec meant that you could use lead solder and be exempt at this component pitch. That is why I posted it on SMTNET. The exemption specifically s
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