Electronics Forum | Tue Jun 25 21:13:10 EDT 2024 | jeremyc
I also happen to be running into this issue. A PCB we're trying to program has a width larger than the max board width. On our O2i, it says 12.992in is the max board width. HOWEVER the tech specs of Dek Horizon O2i advertise a max print area of 508m
Electronics Forum | Thu May 02 20:56:25 EDT 2002 | clunier
I remember reading a magazine article a few years ago that discused using the copper area of a pcb to transfer heat away from large SMT devices. Does anyone know of this article or something similar that I can obtain. The article covered copper area,
Electronics Forum | Thu May 09 17:19:28 EDT 2002 | davef
Can�t help you with the article that you read. Other places to start are: * 2221, 7.2 Heat Dissipation Considerations, 7.3 Heat Transfer Techniques, and 8.1.10 Heat Dissipation * 2222, 9.1.2 Thermal Relief In Conductor Planes
Electronics Forum | Wed Dec 17 06:50:51 EST 2003 | ex maintain leader
140..155 degrees celsus the limit is your inserted component temp schock tolerance
Electronics Forum | Thu Nov 05 20:53:37 EST 2015 | shuttlestar
It's a strange task . if your PCB is very very small ,using topside heat is not a big problem . but for a whole PCB board . if delete the step of preheat, it will broke the whole PCB . BTW,do you finish your task ?
Electronics Forum | Mon Mar 30 12:52:45 EDT 2015 | grauen06
The PCB is in a housing when it is returned from the field and it takes 1.5 hours to remove the PCB from the housing so we are looking for a way to rework the BGA without removing it from the housing. Hence, top-side rework only.
Electronics Forum | Fri Mar 27 12:59:22 EDT 2015 | ppcbs
That is a strange task. I must ask what is the purpose? When performing BGA Rework the goal is to recreate the manufacturing process of using the reflow oven. It is important to have even heat of the BGA and PCB from top to bottom. Using top heat o
Electronics Forum | Wed Dec 17 14:39:18 EST 2003 | Dean
How do you know your profiler is correct? Do you have a pyrometer you can verif the PCB temp with?
Electronics Forum | Fri Dec 19 16:58:47 EST 2003 | rontdc
Kev, If I remember correctly, Hollis used calrod preheaters on that machine and they had a reflector under the elements to reflect the radiant waves back to the PCB. You might want to clean the reflector. If it is too far gone, use some Reynolds Wr
Electronics Forum | Sat Mar 28 06:59:03 EDT 2015 | robertwillis
I would agree with the comments so far its much better to have some pre heat. You have not explained why bottom side preheat is a problem. Even having some input will help balance the process. Assume there is some thing on the back side that is a pro
Products, services, training & consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep, Distributor & Service Provider for Seamark/Zhuomao and Shuttle Star BGA Rework Stations.
Training Provider / Manufacturer's Representative / Equipment Dealer / Broker / Auctions / Consultant / Service Provider
1750 Mitchell Ave.
Oroville, CA USA
Phone: (888) 406-2830
