Electronics Forum | Thu May 28 09:23:59 EDT 1998 | Chrys
| Hello, | | I need some users information about "hot air knife" after the wave | bath: | - Defects reduction ? | - In what kind of boards(TH/SMT SOICS ect.) it is applied ? | - Where can I purchase it as a retrofit (Soltec Delta 6622cc) ? |
Electronics Forum | Mon Sep 28 10:12:53 EDT 1998 | Chrys
| Hello, | I need some users information about "Air knif" in wave soldering: | 1. Does it decreases bridging ? | 2. Is it self installed of a purchesed kit (if purchesed, who are the recomended vendors) ? | 3. Any other information about the issue. |
Electronics Forum | Thu Oct 08 14:04:04 EDT 1998 | Kris Ewen
Manish, I've seen similar phenomenon when processing CSPs on our cards. In our case, we were placing the components over the opening to in-pad blind vias. Due to poor drilling and plating processes by our board suppliers, volatiles were outgassing
Electronics Forum | Tue Jul 02 02:50:55 EDT 2002 | ianchan
Hi mates, was going thru the IPC-A-610C Standards, and noted BGA voids stands somewhere between 10%-25% voids permissible in the solder "ball" bump, after reflow process. Was wondering, hypothetical case study, is there any specification for voids
Electronics Forum | Tue Jun 26 15:40:12 EDT 2012 | ssupertuba
Hello there, I'm presently experiencing some blow holes and solder voids in the solder fillet of caps on boards. They are ceramic caps. The solder is SAC105 and the parts range from 33pf to 0.1uf ceramic. Any suggestions?
Electronics Forum | Thu Jun 28 09:57:50 EDT 2012 | mosborne1
blow holes and via holes are almost always caused by moisture and in PTH they could be moisture and improper drilled holes. If you are seeing solder balls next to the parts than I would say you have a reflow profile problem. Are you using any kind of
Electronics Forum | Wed Jun 27 21:56:31 EDT 2012 | davef
I'm spinning on this. Are we talking PTH or SMT?
Electronics Forum | Thu Jun 28 09:43:25 EDT 2012 | ssupertuba
I'm sorry. These are SMT caps such as a C0805C271J1GAC. Small 0805 caps. I know they gennerally give you solder balls that sit on the side of those parts but they wash off.
Electronics Forum | Thu Jun 28 22:20:23 EDT 2012 | davef
John: Secure the capacitors that you removed from the machine ... * Removed capacitors have a problem * New replacement capacitors don't have a problem Find help to determine the difference between the two reels of parts
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