Electronics Forum: real (Page 1 of 171)

real placement rates

Electronics Forum | Wed Jul 22 17:37:54 EDT 1998 | Jim Lewis

Does anyone have an idea of what a good placement rate (pph) is for a low volume, high mix smt line? We do small lots (10-300pcs), with a feeder count that ranges from 28 to 130 per setup. We have low volume machines (an old (real old) Siemens HS-180

Re: real placement rates

Electronics Forum | Wed Aug 05 10:50:06 EDT 1998 | Jim Price

| Does anyone have an idea of what a good placement rate (pph) is for a low volume, high mix smt line? We do small lots (10-300pcs), with a feeder count that ranges from 28 to 130 per setup. We have low volume machines (an old (real old) Siemens HS-1

Re: real placement rates

Electronics Forum | Thu Jul 23 07:33:28 EDT 1998 | The Wretched SMD

200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. We don't even bother with 04

Re: real placement rates

Electronics Forum | Fri Jul 24 09:50:13 EDT 1998 | Justin Medernach

200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH | when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. | We don't even bother wit

Re: real placement rates

Electronics Forum | Fri Jul 24 12:12:52 EDT 1998 | smd

200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH | | when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. | | We don't even bother

Re: real placement rates

Electronics Forum | Fri Jul 24 16:02:13 EDT 1998 | Justin Medernach

200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH | | | when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. | | | We don't even bo

Measuring the real pressure applied by Squegee

Electronics Forum | Wed Apr 11 21:06:49 EDT 2018 | jacobidiego

Hi experts, I have some stencils in a bad state. Some of the marks belongs to squegee operation. I wonder if it is possible to measure the pressure that is being applied, as we can set the pressure, but we don't know if that value is real and calib

I am having a real tough time

Electronics Forum | Wed Dec 10 15:32:12 EST 2003 | davef

look here: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=6650&mc=5

Measuring the real pressure applied by Squegee

Electronics Forum | Mon Apr 16 15:28:10 EDT 2018 | emeto

If you have pressure sensors in there(most contemporary machines have), value is probably right. It doesn't mean though that the value is correct(see the upper post)

Measuring the real pressure applied by Squegee

Electronics Forum | Thu Apr 12 08:14:43 EDT 2018 | cyber_wolf

The way to determine correct pressure (in my experience) is to start out at what you would consider to be a low sq. pressure setting. You are looking for it to leave a slight film of paste on the stencil. Start increasing pressure in small incremen

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