Electronics Forum | Tue Sep 22 00:51:53 EDT 2009 | rohitfast
In our industry we are producing PCB on which generally number of total component is around 2000. My query is maximum how many component or CRD we can rework in a single board, and what should be the criteria to scrap the board? Is there any specific
Electronics Forum | Thu Apr 25 09:27:03 EDT 2002 | fmonette
Michael, This concern is well covered in J-STD-033, section 8.6 Board Rework. "...If the component temperature exceeds 200C, the board may require a bakeout prior to rework..." In other words, you only need to worry about moisture related defects w
Electronics Forum | Wed Apr 24 21:35:34 EDT 2002 | davef
Ooooo, much better. Tough to say, because of all the variables [ie, different materials, moisture level, temperature, etc]. Plastic encapsulated devices, especially IC, absorb water from the air, which is violently released during soldering. Typica
Electronics Forum | Mon Feb 03 05:02:49 EST 2003 | Eugene
Hi all. One of our customers recently asked us during an audit of our PCBA rework line if we have a limit for the total number of reworks/repairs that can be done on one PCBA. We specify 3x maximum on one location of a major part (LSI for example). B
Electronics Forum | Mon Feb 03 10:55:15 EST 2003 | mantis
would the accumlative overall cost of repair not govern the amount of rework that can be performed. so that if aboard costs 5 dollars to repair and sells for 7 then the amount of effort and time cosumed would not warrent the repair in the first place
Electronics Forum | Mon Feb 03 12:52:42 EST 2003 | MA/NY DDave
Hi I won't give you an answer directly yet I hope the following makes sense. The max rework depends on what is used in the reliability model and/or experimental data as worst case for the applications end of life reliability needs. E.G. let's say
Electronics Forum | Mon Oct 17 06:29:03 EDT 2005 | bandjwet
Please define the pitch of the devices, package size and area rray package style so we make a recommendation. Also let us know the kind of product you will run in terms of their value (WIP cost @ time of rework), maximum board size and board thicknes
Electronics Forum | Tue Aug 17 15:58:14 EDT 2010 | rob_thomas
IPC-7711/7721 states under Scope section: "This document does not limit the maximum number of rework, modification or repair actions to a Printed Circuit Assembly". This is from Rev B of this standard. There are many factors that play a role in the d
Electronics Forum | Tue Jun 25 07:12:46 EDT 2002 | Daan Terstegge
Because BGA's are so hard to rework, you'll want the maximum process window for your reflow equipment, and this includes an inert atmosphere. But as long as solderability and temperature profile are well controlled you can have perfect results with a
Electronics Forum | Mon Jul 23 08:52:20 EDT 2018 | mgerrior
Hey Everyone, looking to purchase a new rework station to support large PCBs. Currently up to a maximum of ~ 21" x 18". Does anyone have experience with any of the following equipment or can recommend from other manufacturers? - VJ: Summit 2200
