Electronics Forum: z and rate (Page 1 of 19)

PPM rate for wave and selective solder

Electronics Forum | Wed Jul 30 16:16:19 EDT 2003 | swagner

What is the industry standard for wave and selective solder PPM defect rate for a world class facility, any responses are appreciated.

PPM rate for wave and selective solder

Electronics Forum | Wed Jul 30 16:42:24 EDT 2003 | davef

here's a start http://www.thepdfshop.co.uk/ppm/asp/Monthly.asp

PPM rate for wave and selective solder

Electronics Forum | Fri Aug 01 00:30:04 EDT 2003 | caldon

Also Try: http://www.airliquide.com/en/business/industry/electronics/expertise/tech_papers.asp you can also search the airliquide site for "PPM" once in the electronics section Cal

R0402 very high fail rate while placing

Electronics Forum | Wed Nov 09 17:22:06 EST 2022 | emeto

1. For laser machines, there should be setting for Z - at what level you should cut measure the part in Z axis. 2. Check all calibrations are in place and passing 3. Check resistor package setup in the software - all dimensions

Re: Fountain Wave Soldering and Repair/Rework Equipment

Electronics Forum | Fri Jan 22 15:48:14 EST 1999 | Chrys

| Hello, | | I will be evaluating and qualifying two equipment types. The first is a fountain soldering device. I need practical advice on all the stuff you guys and gals know about as good, bad, ugly, best applications, setup, limitations, and all

Tp9 and Tp9 ufp

Electronics Forum | Tue Oct 25 15:03:48 EDT 2011 | sjs2303

Hi Bert, For your second issue, are the tools well lubricated? If not the Midas head can fail to grab the tool and can generate the z motor error. Doing this followed by a base-centre level measurement should resolve your problem. Steve

0201 and uBGA

Electronics Forum | Wed Sep 25 06:56:16 EDT 2002 | CH

U may check your profile ramp rate. The flux may evporated and look like cold joint

PCB Thickness and BLR

Electronics Forum | Tue Jun 25 01:24:25 EDT 2019 | sssamw

That is possibley CTE mismatch between QFN and PCB material, the thicker PCB the higher fail rate.

ESD Smocks and chairs

Electronics Forum | Tue Jun 19 21:44:20 EDT 2007 | rfrog

The first thing that I would do is contact the smock manufacturer and ask them for advice on testing the smocks. ESD FROM A TO Z 2nd ed. (Kolyer) states that: smocks should have a resistivity of less than 10^12/sq and must not shed steel fibers.

Pick and Place Speed

Electronics Forum | Thu Aug 05 12:59:16 EDT 1999 | John

I was wondering if anybody could tell what web sit rates the equipment in regards to speed? I was there before but forget the address. Thanks,

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