Electronics Forum: general (Page 7 of 155)

PCB Thickness tolerances

Electronics Forum | Mon Jan 29 17:45:35 EST 2001 | clem

The general guideline for most PCB manufacturers for PCB thickness tolerance is +/- 10%. Is this documented in an IPC spec? If so which one? Thanks Dave

Re: Lead free

Electronics Forum | Thu Jul 20 16:45:37 EDT 2000 | Bob Willis

Many machines for both reflow and wave are quite capable to run lead free but you are generally talking about the high end systems not the light weight units. Bob

What's The Resolution?

Electronics Forum | Mon Jun 18 18:17:10 EDT 2001 | davef

What to you consider to be the minimum resolution [micron] for: General, BGA, die attach uBGA, flipchip, wire bonds Wire cracks, delamination Microcircuit failure What is the relationship between resolution [micron] and the kV of the tube?

Re: more detail

Electronics Forum | Wed Jan 19 01:01:51 EST 2000 | park kyung sam

Would you give me more detail please? i don't understand. is it general in smt process out there or your opinion. thanks in advance.

Preleg Wire (30 Awg)

Electronics Forum | Thu Dec 30 09:56:04 EST 1999 | Judy Forbes

Preleg wire is an epoxy coated wire. Is there an IPC standard or general rule for how Preleg wire (30 Awg) should be tacked down? Should it be tacked down every 1" as is regular wire - Or should it be tacked the whole length of the wire?

Re: CP4-2 XY Table

Electronics Forum | Fri Dec 03 08:06:23 EST 1999 | Mark Anderson

Firstly, Verify your Z-height per the procedure in the Maintenance manual. In general, release the placement stopper and rotate cam onto flat surface of board with z-axis at zero. There should be 0.15 mm compression of the spring

Sony website

Electronics Forum | Tue Oct 26 07:15:10 EDT 1999 | Catherine Mead

Do you know where the sony website is? I've found the general website but not the website for SMT placement machines Thanks

BGA step by step

Electronics Forum | Thu Sep 23 07:04:15 EDT 1999 | joel cruz

I need know the types, characteristic specials for temperature, general characteristics and all I need know about of manufacturer for BGA. I Hope than you send my information about this.

Upgrade Complete

Electronics Forum | Tue Aug 31 10:24:34 EDT 1999 | Clifford Peaslee

Hello SMTneters, We have completed the database conversion from Access to MSSQL. There should be less down time and better general performance. There may be some risidual errors resulting from the conversion. If there is any errors please email the

ESD Tote questions

Electronics Forum | Thu Aug 19 07:19:27 EDT 1999 | Mike Demos

I have a few general ESD tote questions: 1) For purposes of transporting within a factory, are tops necessary to the tote containers? 2) Are there any other colors beside black that are conductive? Thanks, Mike Demos.


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