Electronics Forum | Tue Sep 13 14:10:13 EDT 2022 | emeto
You can have a dry cabinet with or without heater. They use desiccants to take the humidity out from the parts. As you can imagine it will be a lengthy process. The ones with heater can do 40C, which will be preferred for plastic and paper tapes. I w
Electronics Forum | Wed Feb 08 22:15:39 EST 2023 | stephendo
Careful with the term "vacuum sealing". You do NOT want vacuum in the MBBs. If you take out too much air you can create pockets where the moisture gets trapped. Also you can cause corners to pierce the bag. And you can even cause moisture to be pul
Electronics Forum | Fri Jun 09 09:52:03 EDT 2023 | tommy_magyar
I agree with Mainteneer on this. Depending on the active components, I would check the datasheets of them. Particular groups of components to pay attention to: microphones, microprocessors, transformers, relays, switches. Washing may be in some cases
Electronics Forum | Fri Sep 22 00:57:44 EDT 2023 | hazira1991
The actual root cause not yet define. But i do check all that you stated all good setting parameter. 1 week before run the problematic batch, i had run another batch which all the BGA were good no solder short. Just recently i run another batch 21 pc
Electronics Forum | Thu Apr 18 17:47:42 EDT 2024 | dwl
Is your stencil worn out? If your once flat stencil is now wavey, you will be depositing more paste. Ideally, you'll have historic SPI data to compare known good volumes from past prints to the current. Another possibility is moisture. Bake your boa
Electronics Forum | Wed Oct 25 12:24:02 EDT 2000 | Philip
Hi Chris! I hope this will help you! The CBGA uses an array of high melting point solder spheres(Sn10/Pb90) to connect its ceramic chip carrier to an epoxy glass (FR4) PCB using eutectic (Sn63/Pb37) solder joints at both ceramic and card inter
Electronics Forum | Tue Oct 19 22:43:31 EDT 1999 | Stu Leech
We are deeply involved with this question because we have developed a much faster way to remove moisture from PCB's. PCB's absorb varying amounts of moisture at differing rates. The rate is influenced by the laminate type board configuration , loca
Electronics Forum | Wed Sep 29 23:54:07 EDT 1999 | Dreamsniper
Hi everyone, Greetings! I�ve got a 2-layered through-hole PCB�s having the following problems: Solder Mask peels after wave soldering at random locations and only at the bootom side of the PCB Insufficient Solder and some solder never make it to t
Electronics Forum | Thu Jun 24 10:48:02 EDT 1999 | Earl Moon
| Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody hel
Electronics Forum | Thu Jun 24 11:41:10 EDT 1999 | John Thorup
| Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody hel
