Electronics Forum | Wed Aug 08 13:24:44 EDT 2018 | boyo462
The Company just certified to AS9100. One of the minor observations related to the method used to measure the lead length to insure compliance with IPC requirements. Are there any tools/devices/equipment available to measure lead lengths that is repe
Electronics Forum | Tue Aug 14 08:07:40 EDT 2018 | buckcho
Hello, I am not sure what you mean exactly. Lead length is something standard given from components supplier. Pretty much all new AOI machines can measure the length and height of most of the leads on a IC.
Electronics Forum | Wed Aug 08 14:57:20 EDT 2018 | tey422
If you happen to have the Solder Paste Height Measurement System, it would able to do the works for you. That's only if the leads are not long.
Electronics Forum | Thu Aug 09 01:05:03 EDT 2012 | sajith09
I would like to understand What will be the allowable warpage for 152mm length PCB. We are observing about 1.5mm warpage. Is that acceptable? Could you please share method to calculate the warpage
Electronics Forum | Thu Aug 09 07:53:16 EDT 2012 | davef
Allowable bow & twist: Together, both IPC-A-600G and IPC-6012B represent the core IPC documents for describing the acceptable and nonconforming conditions that are either externally or internally visible on finished printed boards. IPC-A-600G relies
Electronics Forum | Fri May 26 10:25:11 EDT 2006 | dwelch123
You also want to look at whether or not you are using lead free paste. "Typically" for leaded paste, 25% is acceptable, depending on end result, but lead free is less forgiving.Not only for the paste to migrate back to pad but also for comp. to right
Electronics Forum | Wed Jul 14 18:51:24 EDT 2010 | rway
Thank you. I spoke with our SMT guy, and he stated that there is plenty of board support on the pcb. So it's not a matter of flexing. There just seems to be inconsistancy in the solder application. He did mention that part of the problem is a lac
Electronics Forum | Tue Oct 22 15:32:09 EDT 2002 | ruppertg125
We are a military contractor and need to build to IPC610 class3. We are receiving many parts with palladium leads and currently use a No-clean solder paste. We have evaluated OA pastes with very little improvements. Without a touch up of all leads th
Electronics Forum | Tue Oct 22 20:37:09 EDT 2002 | davef
Pd takes longer to desolve than the materials yer used to using. Search the fine SMTnet Archives for background on modifying your reflow recipe.
Electronics Forum | Mon Feb 25 21:13:12 EST 2002 | davef
No, none of us can tell you what is the acceptable level of halide content or contamination in flux residue. The level of harmful residues on your product helps determine the reliability of your product. We know nothing of your product, its custome
