Electronics Forum: free (Page 316 of 543)

90/10 & Lead Free Solder Balls

Electronics Forum | Mon Mar 26 10:40:14 EDT 2007 | solderiron

WaveroomPlus can offer the following Sn95.5 Ag3 Cu0.7 Sn95.5 Ag4 Cu0.5 Sn96.5 Ag3.0 Cu0.5 Sn97 Ag2.5 Cu0.5 Steve@waveroomplus.com

SMT equipment

Electronics Forum | Sun Mar 25 18:32:16 EDT 2007 | colormaker

We have narrowed down our search for a new P&P machine with the help of the few thousand threads I have read. We have our eye on three machines APS L60 by APS MC 383 by MannCorp CSM7100 by ESSEMTEC Anyone have any comments on our three finalist ? Fe

soldering robot

Electronics Forum | Fri Apr 13 10:13:31 EDT 2007 | stockley

Lozie We built our own soldering robot using pace soldering irons but we have considered a Apollo Seiko bot for a different facility. I'm curious to know what kind of life you get out of those Apollo Seiko irons with lead-free solder. How many solde

best foam flux for pb-free wave soldering with alloy Sn100

Electronics Forum | Wed Apr 04 10:48:25 EDT 2007 | pjc

Indium Corp. has some, 3549-HF and 3590-T, both are OK for foaming. Most of the better performing newer fluxes require spray application for best performance. Alpha, Kester and others have wave fluxes too. http://www.indium.com/products/circuitboar

0402 aperture design lf

Electronics Forum | Tue Apr 24 02:56:12 EDT 2007 | chrispy1963

If the PCB you are using is a HASL pad finish and is a leaded assembly, we use homeplate pads with a 5 mil stencil. If the circuit has Enig finish and is PB-Free then we use 1:1 apertures with a 5 mil stencil Either method should provide no solde

No Clean Flux (Alpha OM5100) low level analog interference

Electronics Forum | Fri Apr 13 15:42:18 EDT 2007 | flipit

This is sort of interesting. We had a clock problem with Alpha OM-338 lead free paste. The flux residue was causing a clock problem and the clock was only a few KHz. We went back ot OM-5100 lead paste and the problem never occurred again. Chris

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Thu Apr 19 20:27:25 EDT 2007 | Wayne

Agreed. Like I mentioned it before, all the leadfree solders are currently for consumer products. Military, aerospace & some automotive industry haven't implemented leadfree yet. They are still study which to go! Maybe by that time (finalized which t

wave has greenish hue. is this normal with SN100C

Electronics Forum | Tue Apr 24 16:06:33 EDT 2007 | coop

I was just wondering if anybody has noticed a greenish/muddy color to their solder. It is just a very thin layer that can be easily be skimmed away but comes back shortly, I was just wondering if this an indication of a contaminated solder pot, we ha

new reflow oven controller for toaster oven

Electronics Forum | Mon Apr 30 07:38:13 EDT 2007 | realchunks

If this takes off, can we expect to see posts like this: "My reflowed boards are fine, but my Pop-Tarts and bagels are coming out slightly burnt. I think my spike is too hot but my boss is blaming the lead-free cream cheese! Can someone help?"

What are the possible causes why BGA would dislodge from the PCB

Electronics Forum | Wed May 02 06:28:26 EDT 2007 | LC

In our first run, we actually followed the solder paste recommended profile then we were told to use the BGA recommended one. When we had the 2nd run we still got the same problem. We're using Kester 909HPS (lead free) and ENIG boards. Thanks.


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