Electronics Forum | Mon Jun 03 12:51:17 EDT 2002 | V.RAMANAND KINI
We are doing COB operations for nearly ten years. Pls. write to me if you need info on m/c selection, type of PCB, plating etc., Thanks V.RAMANAND KINI...03.06.02
Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal
Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process
Electronics Forum | Mon May 07 11:02:17 EDT 2001 | Singh
Hi all. I am looking into the implementation of the Chip on Board process with eutactic bonding and the then using either gold or aluminum wire to make wedge type wire bonding. Since I am totally new to this, can somebody guide me thru the process,
Electronics Forum | Mon May 07 15:13:03 EDT 2001 | jdtpfacreate
Singh, The equipment varies in price. We make a wire bonder called the HW27U-H Wire Bonder. This is a gold to gold wire ball bonder. The substrate size you mention is within the area we can take into the machine. The key is the bonding area.
Electronics Forum | Tue Jun 04 19:33:16 EDT 2002 | rob_thomas
Dave's estimation is pretty conservative but there is a lot of equipment out there and a lot of people happy to make a sale.Implementing both mentioned processes it's difficult and time consuming .Even if you get good training from whoever sells you
Electronics Forum | Mon Mar 03 09:27:19 EST 2003 | floydl
With regard to measuring dot diameter on my dispensers, is there an easier way to calculate the Cp and Cpk values? This manual data crunching is for the birds!
Electronics Forum | Wed Feb 09 09:43:38 EST 2005 | russ
Can't help you with the machine, but have you considered stencil printing? I have found that this seems to be a better (more repeatable) process than the dispensers I have used in the past (FUJI).
Electronics Forum | Mon Feb 11 13:41:12 EST 2008 | sliebl
We use EFD pneumatic dispensers. Several are second hand from our favorite online auction site. I just checked on there and there are 3 units currently less than $50. Have the bean counters where you work get you one. Tell them your hand hurts from u
Electronics Forum | Thu Feb 07 14:58:08 EST 2008 | operator
We don't have one of those cool air compressed syringes to dispense adhesive. We have to do it by hand. My question is does anyone have any suggestions on syringe size, needle size etc... for successful deposition of SMT adhesive? I know you can go s
Electronics Forum | Mon Mar 03 11:06:13 EST 2003 | msivigny
Hi floydl, I completely understand when it comes to data crunching after long hours of performing measurements, it's the last and most important arduous task in obtaining performance data. If a measurement and evaluation process that traditionally to
