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Scrap criteria

Electronics Forum | Fri Sep 30 16:05:03 EDT 2005 | OEM Manufacturer

Does anybody know of any standards that are > available that cover how many times a part or > complete unit can be reworked before it is > considered to be scrapped? > > I am currently > writing a process to review this with a > supplier. > >

Air inclusion in solder paste

Electronics Forum | Mon Mar 27 15:10:48 EST 2006 | ms

Hi Steve Thanks for your reply. Your comments make it sound like it may be the nature of this paste. Any one else agree? Paste control is fairly good. Paste is put in fridge straight after it arrives at inwards goods, (4deg). Removed from fridge

Researching placement machines - where do I start?!

Electronics Forum | Thu Oct 29 07:56:45 EDT 2009 | jeffreyj

Thanks for the reply, Sr.Tech. Sure, I'm considering all of the things you've mentioned. It certainly seems that service and spare parts are easy to obtain for the Quads, which is the main reason I am even considering the dinosaurs (that and they ca

Bottom Termination Parts-Xray Inspection Criteria

Electronics Forum | Fri Mar 04 18:28:21 EST 2011 | hegemon

First, I would inspect for lack of solder bridges from the center slug to the outside leads. I would then look for evidence that the solder paste has reflowed beneath the component, without leaving too much void percentage. Typically we allow up

Electrical Wiring Anomaly

Electronics Forum | Mon Nov 07 19:33:10 EST 2011 | swag

We have four pick and place machines all exibiting a residue that seems to build up over time on wiring and electrical components. This residue appears as a white haze on wiring, caps and fuses (these are the components where it is most obvious). Y

Typical placement speeds - please advise

Electronics Forum | Sun Jun 29 02:50:37 EDT 2014 | alexeis

Hi, The issue is very complex and difficult to arbitrarily divide the types of components. From research we perform today together with our customers to design a work-at-SMT accurate as much as possible, I can summarize that vast time differences de

Buying a new Reflow

Electronics Forum | Tue Jul 21 07:59:14 EDT 2020 | spoiltforchoice

We went Heller in the end, a combination of the brand the price and the support helped us make the choice. The profiling we have done suggests the short(ish) zones you get in a 1707Mk5 are pretty even and if you go though the Heller literature you'l

Re: Exhausting of flux in reflow ovens

Electronics Forum | Fri May 14 00:16:28 EDT 1999 | Mike D.

| Does anyone know of any industry guidelines for the exhausting of volatiles in reflow ovens? I've seen some numbers like 1,000ppm for the oven atmosphere, but is this typical? | | My concern is the volatiles in my WS629 solder paste may be attack

Re: Fuji IP3 Nozzles

Electronics Forum | Wed Sep 16 16:03:36 EDT 1998 | Ben Salisbury

| | | Has anyone used Fuji's rubber tip nozzles for the IP3? Are they O-ring type or suction cup? I'm having trouble picking up Ompacs due to the top of the part not consistently being flat. Any actual experience with these $1100 nozzles would be a

Machine good/bad points

Electronics Forum | Fri Mar 29 11:12:34 EST 2002 | stefwitt

I can not tell you which machine types are the majority in the market. For these numbers you should contact Charles Henry from Ceeris. I guess with the term low quantity / high volume you mean low mix / high volume which means low variety of differe


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