Electronics Forum: boarded (Page 836 of 1638)

DEK Screen printer calibration - print offset issue

Electronics Forum | Thu Mar 30 10:02:03 EDT 2017 | Bestglobal SMT

We have a 2008 DEK horizon 03i this machine has been a very reliable system. we are having an issue with the print being offset in the x .2mm I have run 4 different boards - same issue on all. same offset. i can print the board 10 times over and

Which kind of supplier should I choose for pcb fabrication?

Electronics Forum | Wed Jul 05 05:07:51 EDT 2017 | heros_electronics

Hi Claire, Is it a 4G smart phone? Generally, 4G pcb board is HDI pcb with laser drilling and small line width and space, and not all PCB suppliers can manufacture because HDI PCB has special requirements for equiment, and small factory can not

The necessity of N2 enviroment on lead free wave

Electronics Forum | Sat Jun 24 07:34:03 EDT 2017 | tch

We bought a new lead free wave from Electrovert about a year ago and opted to not have the nitrogen options installed on this machine. We could not justify the cost of the nitrogen used versus the benefits that we would see. One downfall is that you

How are you reworking high mass LED pcb's?

Electronics Forum | Thu Aug 31 10:38:24 EDT 2017 | jchris

Thanks for all of your suggestions. I ended up borrowing a Pace Worldwide PH100 Preheater, which worked like a charm. I'm in the process of purchasing one for our own shop. I had to place the aluminum pcb directly onto the PH100's ceramic heating pla

Reflow Profiling

Electronics Forum | Mon Jul 24 02:01:22 EDT 2017 | tsvetan

This will depend on many factors: your reflow oven chamber size, your oven temperature controller, the speed of the conveyor, size and mass of your PCB, etc etc. In practice you should adjust the profile for each case if you want to set in the optim

I need a pcb cutting machine for separating the aluminum board

Electronics Forum | Mon Jul 31 09:11:56 EDT 2017 | davef

Try: * YUSH Electronic Technology Co.,Ltd [http://www.pcbpunchingmachine.com/product-833.html ] * Asc Electronics & Technology Co., Ltd. [http://www.ddfcc.com/sell-1988453-v-cutting-machine-for-aluminum-board-fr4-singulating-pre-scored-pcba-asc-509

IPC Class 3 Annular Ring and Fine Pitch BGA Challenges

Electronics Forum | Fri Sep 08 21:49:24 EDT 2017 | sbar5781

Hello, I have a few PCB boards i am trying to be manufactured that are miniaturized medical devices. Thus they require IPC Class 3 Specs. However as miniature devices they have limited space, including a 0.4mm pitch BGA socket, which currently has

Mid Grade BRA Rework (20K to 50K)

Electronics Forum | Mon Nov 13 13:26:43 EST 2017 | rcooley4

Hi all, I'm in the market for a BGA rework machine capable of handling a wide range of PCB's, anything from little 2"X2" board up to 15"X15" back-plane boards that are 0.100" thick. I would like to find a machine that can remove BGA's & QFN's, clean

Best test methods to qualify reflow ovens, automated optical inspection

Electronics Forum | Thu Jan 04 03:01:38 EST 2018 | buckcho

As always, our good colleague Evtimov is right about the AOI and oven. For the AOI you need to make a golden sample board(panel) and test if your machine can catch all defects that you simulated BEFORE the oven. Try to me as accurate to real defects

Tracking labor at selective solder

Electronics Forum | Wed Dec 27 09:05:35 EST 2017 | charliedci

All the response is appreciated. We have 4 SS machines and 2 operators (normally). Some jobs take up to 15 minutes (multiple boards), some take less than 2 minutes (machine time). Some involve fixtures, preheat, some may require the operator to mon


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