Electronics Forum: (4) (Page 123 of 662)

Paste printing, acceptable tolerance ?

Electronics Forum | Tue May 30 15:53:33 EDT 2006 | slthomas

I can't believe I waited 4 days to read this. Freakin' brilliant! SMTGCE's got nuthin' on you, dude.

V-scoring design and equipment questions

Electronics Forum | Tue Jun 13 08:33:11 EDT 2006 | davef

IPC-2222, 5.3.1 defines the parameters of making scoring cuts and the tolerance of the cuts, but does not specify the cuts. Our spec for 0.062" thick FR-4 boards is: 0.018-0.024"

0201's on large boards

Electronics Forum | Thu Jun 15 07:20:23 EDT 2006 | William G.

How are your experiences with stencilling 0201 components on large circuit boards, i.e. 400 * 250 mm ? Will there not be too much mismatch between between stencil and (FR4) boards? If so, would dispensing be a solution? Any other solutions?

Nitrogen purity requirments

Electronics Forum | Fri Jun 30 08:14:03 EDT 2006 | slaine

I looked into nitrogen generators, it was 4 years back and I was trying to get 99.995 i think. About �20,000 for the generator then another �20,000 for the compressor you need to force the air in. I spoke with David Groome of BOC UK 01709 842358

Intrusive reflow component selection

Electronics Forum | Mon Jul 10 05:34:22 EDT 2006 | Loco

If you can, get some samples and just let them run through your oven a couple of times, they dont need to be mounted, just place them on top of some FR4, you'll find out soon enough if the plastic will hold.

CAF

Electronics Forum | Thu Sep 07 18:25:36 EDT 2006 | GS

If I am not wrong, by reading so huge amountof infos, it seams that CAF test is justified (suggested) if the PCB has at least 4 layers. Correct? What about in case of a need to perform a CAF test ona 2 layers PCB ? Thank you Best reagrd.....GS

Paste Mixer

Electronics Forum | Thu Jul 27 12:21:16 EDT 2006 | Chunks

I would recommend our mixer, Jose'. He doesn't talk much but can mix 4 jars in about 15 minutes! Are you looking for a mixer or viscometer?

0402 feeders

Electronics Forum | Mon Jul 31 09:14:07 EDT 2006 | russ

Don't know if they "needed" embossed or not but....... I get an LED that is 0402 on embossed but, it is also at 4mm pitch as well.

conceptronic password

Electronics Forum | Mon Jul 31 06:35:08 EDT 2006 | kevin

Hi all, Does anyone know the default passwords for a conceptronic profile 160. I need levels 1, 2 and 4 thnks in advance

cost analysis: Manual vs. Auto insertion pick and place

Electronics Forum | Fri Aug 04 12:53:15 EDT 2006 | pemea1

Is there a cost analysis? How can a small business (4 employees) compare small lot sizes with companies who have auto insert. machines?


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