Electronics Forum: formula (Page 7 of 37)

Imm Silver & Screen Printing

Electronics Forum | Tue Aug 01 13:47:46 EDT 2006 | russ

i'm not Dave F by any means but here is the deal with seperation speed. Totally dependent upon paste formula. I have two formulas of paste here (WS lead,NC lead and pbfee) and one we seperate as fast as machine wil allow (WS), while the other (NC)

Baking Moisture Sensitive Components >4.5mm

Electronics Forum | Mon Jan 22 14:22:46 EST 2007 | muse95

Actually, I've been looking into this myself, and the B version doesn't help any more than the A version. The tables still only go to 4.5mm. And Appendix B has a bunch of formulas with undefined variables that I haven't been able to figure out. An

Does anyone still use a foaming stone for flux in Wave Solder Machine?

Electronics Forum | Thu Feb 08 08:37:55 EST 2018 | proceng1

We have two Wave Solder machines and still use the FOAMING flux, but the formula we used to use was discontinued, and the one we are currently using isn't as good. I'm hoping that others are still foaming and will share what flux formula they are us

Reflow profiling of double sided assemblies

Electronics Forum | Fri May 24 09:34:57 EDT 2013 | markhoch

I run the same profiles for Top and Bottomside assemblies for all of my products. Only in rare instances have I been forced to run a profile with cooler bottom zone settings. This was obviously driven by assemblies with heavier components on the bott

PCBA Time Estimation Formula

Electronics Forum | Thu Mar 21 16:50:10 EDT 2019 | emeto

Hello, I've done it before in Excel and it is a very simple concept. Inputs are board size, numbers of SMT and TH process sides, number of SMT and TH placements per side, boards per panel and quantity of boards to be produced. Output will be calcul

PCBA Time Estimation Formula

Electronics Forum | Wed Feb 19 12:47:15 EST 2020 | emeto

Grandpa, You got it - Identifying the bottleneck operation is the key. The secret is to design a tool can predict accurately where this bottleneck is. In your formula you can use machine process time, PCB transportation time, part trim time, part in

Re: span for througt hole components

Electronics Forum | Tue Dec 15 13:42:50 EST 1998 | Tom B

I do not know the specific formula, bu I do have some Military Standard documentation from 1989 showing some inferences on span of components. Send me your fax number and I will fax you a copy. Tom B | Hello everybody: | somebody know about the

Re: span for througt hole components

Electronics Forum | Wed Dec 23 03:29:15 EST 1998 | Thomas Schmidt

I�m interested in your list. Please send me the copy per fax. Here�s the number +49 821 69526 | I do not know the specific formula, bu I do have some Military Standard | documentation from 1989 showing some inferences on span of components. Send me

Looking for video of Formula 1 pitstop

Electronics Forum | Tue Sep 14 16:09:39 EDT 2004 | Guest

I want to show our production that changing over the pick&place line can be done much faster than we do now, but only if we organize things in a different way. What I would like to discuss with the operators is how Formula 1 teams are doing their cha

Looking for video of Formula 1 pitstop

Electronics Forum | Wed Sep 15 05:33:04 EDT 2004 | Rob

Hi, The thing with Formula 1 is that they can afford to throw innumerable bodies at tasks (i.e. 8 people to change 4 tyres, 1 to hold a jack, 1 or 2 to refuel, 1 to hold a stop sign, 1 to hold a fire extinguisher, 1 with a stop watch, and the bloke


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