Electronics Forum | Wed Nov 20 21:04:15 EST 2002 | yngwie
Hi Dave, What do you mean by "if the board is manufactured properly". If the board is not manufactured properly, humidity will have an impact on the peel strength? Is that what you mean. How does the Humidity impacted the peel strength ? Thru' which
Electronics Forum | Fri Sep 01 22:44:47 EDT 2006 | dmfausti
I have just been engaged again in SMT pick-n-place machines. My latest exposure is with Yamaha YV100 and YM84. I have been having some problem on feeders, especially on 1206 reel packages and above. The plastic cover on the reel does not peel off eas
Electronics Forum | Wed Oct 11 09:53:06 EDT 2006 | Rob
Yes, kind of - I had a look through my notes from a while back where we did a lot of work on bending strenght but the only original source I could find was reference to a paper drawn up in 1979 "Increase Terminal to Pad-Peel Strength with a Standard
Electronics Forum | Wed Jun 12 08:13:29 EDT 2002 | davef
Don't sound proper. There is no specification. Pad peel strength test methods are: * IPC-TM-650, Method 2.4.21 for multiple solderings * IPC-TM-650, Method 2.4.8 for copper peel with a Instron machine. Typical requirement for Cu is: 6 lbf/in [1
Electronics Forum | Fri Nov 22 08:57:56 EST 2002 | davef
Q1: What do you mean by "if the board is manufactured properly"? A2: If the epoxy is noy cured prooperly, for instance, the copper will not be well attached to the glass. So, peel strength will be lower. Q2: I don't believe that the peel off/or lif
Electronics Forum | Mon Jul 14 12:24:02 EDT 2003 | MA/NY DDave
Hi So Steve, I must have missed something from your last subject topic. "solder fillet peeling" Are you saying you or they, Ultrasonic Clean for 20 to 30 minutes after soldering and that is suspected as causing the cracking at the top of the compo
Electronics Forum | Wed Apr 03 10:25:04 EDT 2013 | gregp
We all seem to have forgotten about cover tape peel force testers. GPD makes them as do others I suppose. I would ask the tape and reel house if they have a tester. If they don't I would consider using someone else. Otherwise as another poster s
Electronics Forum | Thu Aug 24 09:32:40 EDT 2000 | Stefan Witte
If this is a problem you see with all your paper tape, you may want to talk with your machine vendor. Sometimes a sharper blade in the feeder,which peels off the cover tape, helps to keep the carrier tape together.
Electronics Forum | Fri Jul 04 09:01:49 EDT 2003 | davef
You should see a coarse silverish / grayish coat on the termination that indicates that it soldered. We have to opinion [don't know] about the strength of solder connection versus the strength of component terminations.
Electronics Forum | Mon Jul 07 11:36:11 EDT 2003 | slthomas
It's definately soldering because the fillet is pulling the solder plating (I believe, from what I can see under available magnification) off of the termination, and some of the nickel plating as well.
