Electronics Forum: how to measure paste height (Page 1 of 6)

Attrition... how to measure it?

Electronics Forum | Mon Jan 30 13:19:37 EST 2012 | deanm

Now knowing that its a Quad, I'm assuming it has QuadAlign which spins the part it just picked in a beam of light and a sensor measures the length, width and height of each part. If it falls outside of a defined range, it will throw it in the dump bi

Attrition... how to measure it?

Electronics Forum | Sat Feb 04 23:09:00 EST 2012 | jorge_quijano

Thanks for the info, I will check tolerances and the quadaling option. As an update I ran this past week and machine was arround 5% for a very small lot size, for a larger size lot it was less than 2%, Now I know it still higher than our newest machi

How to define solder paste printing height tolerance

Electronics Forum | Mon May 07 16:07:05 EDT 2012 | davef

Start with targets based on the stencil thickness (for height) and stencil thickness times the aperture size (for volume). * Set reasonable upper and lower control limits (+ 25% and –25 % of the targets, for example). * Next, check the printer set-u

how to measure an assembly cost of a board

Electronics Forum | Tue Aug 12 19:18:34 EDT 2008 | arminski

Hi davef, couple of questions: clarifying costing of direct labor against overhead cost: an operator loading PCB onto the reflow oven is a direct cost, how about the reflow process time of the PCB while travelling inside the reflow, is that an ove

Solder paste height and metal squeegees

Electronics Forum | Fri Apr 20 08:41:56 EDT 2001 | jimlew

For those of you out there, like myself who are still using 2-d to measure paste ht, I have 2 questions. 1. Typically, what tolerance are you applying to your ht? +- 1 mil, or what? 2. Are you using metal squeegees, and if so, have you found that squ

How to define solder paste printing height tolerance

Electronics Forum | Mon May 07 10:42:09 EDT 2012 | saju86ece

Hi, I need one clarification about solder paste printing height tolerance. How to define and fix the solder paste height tolerance after screen printing for inspection purpose. Currently we are using 5mils thickness of stencil, in that we are gave

Paste height SL

Electronics Forum | Thu Mar 17 09:56:34 EST 2005 | jmedernach

Tx, Your spec limit is the point at which you expect to see a failure. In other words, what is the probability that you'll see a short when you have .008" of solder paste? What is the probability that you'll see an open if you have .004" of solder

Volume and average height of solder paste after printing machine

Electronics Forum | Thu Oct 02 17:00:44 EDT 2008 | davef

Is that accurate? If so, what are your aspect & area ratios? [Similar to the JerryS comment above.] * You say, � � and the average height is very high: nearly 200 pct.� => Our troop can make paste that height too. They snap the stencil-off a fast as

Solder Paste Volume measure in SPI

Electronics Forum | Wed Apr 11 20:58:12 EDT 2018 | jacobidiego

YES to the first question in some points of the board. Bulky, to the second question when it is not in short. What you say about the PAD height, helped me to understand why the SPI shows weird values for other measurements. I am currently doing test

Solder Paste Volume measure in SPI

Electronics Forum | Thu Apr 12 04:17:08 EDT 2018 | buckcho

Diego, I dont know how this machine works. Maybe they patented some way of measuring. But the idea of Mr. Evtimov is very good. Measure the pad only and see its value. If it is not 0, you have to know why, maybe ask the machine supplier. Also like Mr

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