Electronics Forum: 0.5mm thickness fr4 double sided (Page 1 of 1)

support pins for double sided boards

Electronics Forum | Tue Sep 05 06:23:19 EDT 2006 | jonatf

Hi guys, I want to improve the set up of our printing machine(EKRA) especially on a 0.5mm thickness double sided boards.I find the support pins very time consuming.. any advice?? thanks.

Underfill rework issue

Electronics Forum | Sun Sep 02 07:55:19 EDT 2007 | lennielly

Hi every one I would like to have some inputs here,I would be very appreciated if you can give your suggestion; Currently we are working on 2 underfilled BGAs with SRT-1800 rework station(hot air type),one is mounted on a single sided PCB whereas the

compactflash memory process requirements

Electronics Forum | Fri Apr 19 07:50:24 EDT 2002 | pjc

I used to build flash memory products for M-Systems. Up to 30,000 per week. Nothing special in the process for these boards. 1mm and 0.4mm thick std. FR4 PCBs are used. Double-Sided reflow. The 0.4mm thin boards require process carriers. Panelized 24

Re: Tg - Glass transition temperature

Electronics Forum | Fri Jan 21 14:51:08 EST 2000 | Dave F

Mike: I�d hate to see you making design decisions, based solely on the discussion here, but that this would be an impetus to consult IPC-D-279, "Design Guidelines ... " and take a course on designing reliable boards. Werner Engelmaier (Engelmaier

Wave Soldering Ceramic PCB's

Electronics Forum | Thu Aug 09 16:41:12 EDT 2001 | johnw

Dave , you know it's your cheery disposoition I love.... Ok so the process: Process is Double sided reflow for SMT & PTH via the wave. Like I said or did I, I forget and can't check back...it's a spray fluxer with noclean mutlicore NR3s-06 water b

Re: Minimizing Board Warpage During Reflow

Electronics Forum | Wed Jun 03 11:17:17 EDT 1998 | Brian Stumm

If your board is single sided you should convey it on a mesh belt conveyor. Unfortunately most assemblies these days are double sided which makes it difficult to convey on the mesh belt. Plus with the increasing population on SM boards the weight is

Thanks for the info!

Electronics Forum | Wed Jun 03 14:37:53 EDT 1998 | Anthony

I really appreciate everybody taking the time to help me out with this problem. I'm going to run your input by the design engineer, after that I may be taking you up on that offer to contact you Earl. Again; thank you! Anthony | If your board is si

Re: BGA rework : IR or convection

Electronics Forum | Wed May 19 10:56:52 EDT 1999 | Glenn Robertson

| | | We are currently looking at purchasing some BGA rework equipment. Could someone give us the pro's and cons of IR heating (top/bottom)vs. hot air convection ? | | | All other tips are also welcome. | | | | | | Thanks | | | | | Philip, | | M

Re: Board Warp And Twist

Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis

You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di

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