Electronics Forum | Mon Aug 26 12:37:58 EDT 2013 | deanm
Your stencil printing process is probably the most critical process in SMT. The paste I'm using states the best environment is with a temperature of 20-25C and humidity of 35-60% RH. Your paste may vary. We've run down to 10-15% RH with no measurable
Electronics Forum | Fri May 27 14:15:21 EDT 2005 | ve7khz
Hi Folks, Starting a second SMT line this year and it's been (too) long since I have looked at newish machines and I am in need of some assistance with P&P machine selection. Here is what we currently have: Panasonic CM-202 chip shooter 216 8mm reel
Electronics Forum | Wed Feb 25 21:37:12 EST 2015 | dinhhuunam
Hi Bartel , 1.1 Profile Solution to Cold Soldering Cause for Cold soldering The peak temp of reflow is too low. The preheating temp is too high and it takes too long Solution Lower the preheating temp and increase the peak temp in the reflow zone
Electronics Forum | Fri Jan 22 14:24:44 EST 1999 | Dave F
| I was just wondering what solutions are out there for dry storage. Our basic need is to be able to store boards that have been baked and need to remain moisture free for up to a week. | Michael: Let's take a different angle on this. Why not ha
Electronics Forum | Fri Jan 22 17:38:07 EST 1999 | Michael Larsen
| | I was just wondering what solutions are out there for dry storage. Our basic need is to be able to store boards that have been baked and need to remain moisture free for up to a week. | | | Michael: Let's take a different angle on this. Why
Electronics Forum | Thu Feb 13 03:49:15 EST 2014 | jlawson
Yes all above is correct, as solder deposits get smaller and mesh T4+ , actual metal to air contact surface area increases , say in contrast to T3, add to this less flux , and flux running away from the joint, re-oxidation and what flux is left, can
Electronics Forum | Tue Nov 20 11:19:07 EST 2018 | spoiltforchoice
Ahh but you're missing the key points. The YSM40 is in no way ever intended to operate on its own, to keep those 4 heads busy they all need to be placing high volume parts, combined with a high throughput of PCB's probably in dual lane mode which in
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
Electronics Forum | Mon Oct 29 15:58:47 EST 2001 | davef
Kitting: Buy-in material in kit form that is complete and in the proper form. Line set-up: Layout all boards to be the same width. Printer set-up: Use a dispenser, instead of a printer. Dispenser set-up: Program & debug off-line. Placement machin
Electronics Forum | Thu Nov 03 10:19:52 EST 2005 | Rob.
Tell me about it, I've set up & run places with placement capacities of 180K & 300K Per hour, and on the other side places with around 2-5KPH (if you ran quick enough between the machines & were nifty with a rubber blade). And I've worked for some o
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