Electronics Forum: what is the correct relative humiditive (Page 1 of 2)

what is the max print speed? thanks for your help

Electronics Forum | Sat Nov 17 11:36:16 EST 2007 | etienne

On a Dek Horizon 03 the tact time for one panel measuring 400mm print stroke took me 16 seconds at a speed of 55mm/sec. I see no reason for reducing further tact time since loading and unloading PCBs from Pick & Place machines is relatively close.

what is the max print speed? thanks for your help

Electronics Forum | Mon Nov 05 13:33:08 EST 2007 | slthomas

Heck no, I mean we print relatively slower on complex boards, as in 1 inch/sec (25.4mm/sec), and maybe 2 inches/sec. (51mm/sec) on less complex boards. SMT is not a bottleneck in our plant and printing never the bottleneck in SMT, so I see no need t

what is the max print speed? thanks for your help

Electronics Forum | Sat Nov 17 12:58:12 EST 2007 | mika

I agree with previous postings regarding print speed: Solder paste type/versus fine pitch. Question: Is this a double sided pcb with fairly easy component packages on both sides? In such case, consider make the panel like this: Every second pcb in

Solder in wave soldering: Which one is the best?

Electronics Forum | Mon Feb 28 11:31:08 EST 2005 | russ

This sounds a lot like a profile that is killing flux activity prior to wave immersion. What is your topside preheat temp just prior to hitting the wave? What type of preheat do you have, convection or radiant? Are you using a chip/turbulent wave

What is the lifespan of your SMT machines?

Electronics Forum | Fri Nov 18 21:40:41 EST 2005 | mika

We had some experience that some of our old machines went over 10 years. In this case the machines became to be obsolete. The machine manufactories in most cases, is only required to handle spare parts during this period of time. This is what I am be

What is the rootcause for BGA Lifted PAD after reflow

Electronics Forum | Mon Jun 16 12:06:52 EDT 2008 | realchunks

Seen this with our old board house. The uncured board is causing your problem. Hard to catch, but looks like you have all your ducks in a row. We presented the exact same thing to our board house, and naturally they blamed our process, handling, a

What is the best IPC standard to refer to for Cleaning of Printed Board Assemblies? Thanks, Joe

Electronics Forum | Thu Mar 14 15:55:34 EDT 2024 | davef

Process Requirement Standard - J-STD-001 - Requirements for soldered electrical and electronic assemblies depicting minimum end product acceptable characteristics as well as methods for evaluation (test methods), frequency of testing and applicable a

Re: What is spec on stretch????

Electronics Forum | Fri Apr 16 17:19:59 EDT 1999 | Dave F

| | Hi, | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .030"

Re: What is spec on stretch????

Electronics Forum | Mon Apr 19 10:14:12 EDT 1999 | Justin Medernach

| | | Hi, | | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .0

What is the QFN or Device Voiding Levels Needed for Automotive Industry for Power Devices for Electric Vehicles?

Electronics Forum | Wed Mar 15 10:21:08 EDT 2017 | pzappella

Hello Rob, I totally agree with you. Is this a real problem that is being shoved under the rug or just whatever voiding we get from a belt furnace is good enough. I think vacuum reflow can do much better but is a batch approach and not contin

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