Electronics Forum | Tue Jan 20 10:30:56 EST 2009 | milas
Hi We have just specified the following thicknesses for the Nickel and Gold on an ENIG finish board. The baord is to be manufactured using a lead - free process. My question: Is the thickness we've specificed likely to gie us any issues during manuf
Electronics Forum | Wed Sep 09 10:24:03 EDT 2009 | clampron
Hi Dave, J-STD-005 is the standard for solder paste requirements. I checked J-STD-006 for solder alloys fluxed and non fluxed and could not find any information on expired wire and how to requalify. Is there some other place that I should be looking
Electronics Forum | Fri May 07 15:58:36 EDT 2010 | smt_guy
I'm looking for an optical scope that can penetrate through a gap of 0.005" to 0.010". Is there anything available in the Electronics / Semiconductor Industry for this kind of application? I want to see what's inside that size of gap for solder short
Electronics Forum | Tue Dec 28 09:52:28 EST 2010 | flipit
Use a 0.002" to 0.003" thick stencil. Use an electroformed stencil from Photo Stencil or one of the others. Use -500 +635 paste or a -500 paste or type 5 or greater paste. I have printed at 0.008" pitch with 0.004" pads. It can be done.
Electronics Forum | Thu Apr 19 03:06:11 EDT 2012 | roblackey
Hi Gaz, I know it's not the most elegant solution but why don't you just buy 20 tubes of TSSOP logic IC's such as 74HCT27PW (depends on width)- these type of parts are around $0.05 each so you are not going to be paying more than $2.50 for a tube of
Electronics Forum | Sat Nov 10 19:54:04 EST 2012 | kahrpr
Some people put spark gaps on the PCB it a trace that comes to a point that's exposed from the circuit you are trying to protect to a trace that comes to a point from the ground trace. The 2 points are about .005 inches apart. When the charge hits th
Electronics Forum | Fri Mar 15 18:44:34 EDT 2013 | anvil1021
We will try both the solder mask and the .001" Kapton and see where we end up with each. This is a fine pitch dual row QFN and we cannot afford too much paste on the .004" stencil we are using. We have experienced shorting in the past with .005" sten
Electronics Forum | Tue May 26 00:22:35 EDT 2015 | hemantp
help required for understanding correct nozzle for the fuji feeder ( CP642 or QP242 )mounting of the SMT Pogo pins ( single Pin ) The Part nos are 1. P/N : HCS0712SM01-B20150507 (Female pin) and 2. P/N : N005M1-01C000CR (Male pin).
Electronics Forum | Mon Jul 23 11:44:40 EDT 2007 | davef
NASA-STD-8739.1, 10.2.3 Thickness Measurements. Thickness measurements shall be made on coupons processed at the same time and under the same conditions as the PWA. The coupon substrate may be any compatible rigid material with a smooth flat surface.
Electronics Forum | Wed Dec 13 20:42:57 EST 2000 | Dave F
Material Dk @ 1GHz tan d @ 1GHz Difunctional 4.40 0.020 Multifunctional 4.43 0.018 Polyimide 4.06 0.006 Cyanate ester 3.65 0.005 Bismaleimide triazine 2.94 0.011 PPO-epoxy 3.85 0.012 PTFE-glass 2.60 0.001 PTFE-mat-CE 2.79 0.003 PTFE-ceramic 4.06 0.00