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 | Wed Dec 06 07:24:22 EST 2006 | davef
Successful solder paste overprint is a function of the solder paste rheology, solder mask and through hole component stand off. * Solder mask with a high surface energy will permit a larger overprint than a solder mask with a lower surface energy. In
Electronics Forum | Tue Aug 21 20:52:06 EDT 2007 | davef
There is not standard for the force to pull an axial lead from a soldered connection. ".....IPC does not have pull tests in any of its standards, and some reliability experts would prefer to keep it that way, pull tests are commonly used by some lea
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 | Wed May 15 10:09:56 EDT 2019 | dhanish
Can we bent a PCB using mechanical force ?Will the PCB come back to original condition or it will be bent forever after the mechanical force is removed from the pcb?
Electronics Forum | Mon Jun 17 13:45:29 EDT 2002 | genny
When the pad comes off, is it leaving behind a "black" area? Your board may be suffering from black pad - a condition that occasionally affects ENIG finish boards. It is a process control issue with your board fabricator. The nickel is oxidising b
Electronics Forum | Thu Feb 21 10:11:36 EST 2013 | patrickbruneel
The backflow in the wave started to become very important with the development of no-clean/no residue fluxes. These fluxes don’t have (or at least shouldn’t have) rosin, resin or other vehicles in the formulation which encapsulate surface oxides from
Electronics Forum | Fri Feb 17 12:53:30 EST 2006 | bvdb
We just got our used Fuji IP-1 working well. Sometimes during testing of a new program/pcb we like to stop the run and re-start with a clean board. When we make the IP-1 eject the unfinished pcb and start with a new pcb the IP-1 does not scan the f
Electronics Forum | Thu Jun 15 08:44:18 EDT 2006 | jdengler
Bert, The original IP feeders do a poor job of peeling the cover tape. Things to check: -All teeth present on the take-up reel -Take-up reel has even drag as it rotates (reel out of round or dirty) -Take-up reel drag is not too high (locations and
Electronics Forum | Fri Mar 15 08:20:06 EDT 2013 | torch
we quite often see this on our quads usually only on the 8mm feeders, sometimes the tape roller can become sticky as suggested. usually i just remove the roller and apply a grease to the screw so that it can move freely also make sure that the peel
