Electronics Forum | Tue Aug 31 15:43:41 EDT 2004 | davef
You�re asking the wrong person to give remedial math lessons. Anyhow, here we go: * [1.56 microgram NaCl/cm^2]*[2.54 cm/in]*[2.54 cm/in] = 10.06 microgram NaCl/in^2 * [Omegameter] / [MIL-P-28809 Beckman / Markson] = [10.06 microgram NaCl/in^2] / [GS
Electronics Forum | Wed Feb 28 00:12:22 EST 2007 | Muhammad Haris
hi, Consider BGA1= bigger one BGA2= smaller one CONSIDERATION : 1. If bga2 is inside the bga1 then bga1 balls should not touch the bga2 upper surface i.e. the inside balls of bag1 package should b in ur mind, so choice is urs. METHOD: m
Electronics Forum | Wed Sep 17 05:41:16 EDT 2008 | ralphspm
Can Fuji machines such as IP1 and IP2 utilise 2mm pitch feeders provided by Hover-Davis? Has anyone used them on an IP1 or IP2, and if so were they effecient? Does anyone have 2mm pitch feeders that utilise an Fuji IP1/IP2, for sale? We are currently
Electronics Forum | Mon Nov 11 17:16:11 EST 2002 | soupatech
Hi, I use the Fuji MCS-16F. The disks I have are labled.... MCS 2E System Disks #1 - #10 Version 3.38 MCS 2 Option Disks #1 - #2 V2.54 Automatic Programming 10 MCS 2 Option Disks #1 - #2 V2.49 HOST Communication 11 OS-9/6800 Level 1 System Di
Electronics Forum | Wed Feb 10 17:00:44 EST 1999 | James Seagle
Does anyone have experience placing a Pinrex 2mm 2x20 SMT header. The dimensions of the part are as follows: length 40mm (1.58"), width 6mm (.236"), height 5.35mm (.211"), pitch 2mm (.079"). If so, what type of centering are you using? Any advice
Electronics Forum | Thu Jul 17 20:46:55 EDT 2008 | davef
Which type? * Solder beads (mid-chip solder balls, attached to the waste line of your chip caps and resistors) This is more paste volume related. * Solder balls that tend to be more randomly scattered (as in spattered)? This tends to be more profile
Electronics Forum | Tue Feb 28 20:56:12 EST 2006 | davef
Here you go ... PCB FR-4 Inspection Manual 1 Introduction This defines the minimum acceptability requirements. It is not intended for use as a performance specification for the Company or procurement. It is based on the requirements of Acceptabi
Electronics Forum | Thu Sep 27 23:24:22 EDT 2007 | mika
Fe2+(aq) + 2e- "harply, but this is of no consequence since OH- ions are always present, even in pure water.) The cations then react with the OH- or even the H+ ions and dissolved oxygen to form a variety of compounds, which constitute rust: Fe2+(aq
Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef
Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we
Electronics Forum | Wed Mar 05 08:12:56 EST 2003 | nifhail
Hi Mike, How do we measure the O2 ppm in N2 environment. I don't understand why the customer keep insisting me to use N2 instead of Air. I don't see the need for it as I done have any soldering issue. Can you share with me why N2 is needed at the fi