Electronics Forum | Tue May 18 14:47:02 EDT 1999 | Dave F
| Looking at the full convection reflow oven market, I see two segments, high mass heater ovens (i.e. Electrovert Omniflow,...), and low mass heater ovens (i.e. Heller,...) | Did some of you guys did some testing on both types and what were your find
Electronics Forum | Sun Apr 25 11:37:51 EDT 1999 | Earl Moon
| We are just starting to manufacture a PCB with a .039" fine-line PBGA. We are currently seeing voids, mainly in the center, that are as much as 45%. We also intermittently see the corner balls of the PBGA smaller than the center balls. We are using
Electronics Forum | Fri Sep 18 08:49:12 EDT 1998 | Earl Moon
| | We have problems with voids when we solder lids to | | ceramic flatpackages. | | The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel | | The solder is attached to the lid (preform) and the solder
Electronics Forum | Sat Mar 06 08:01:45 EST 1999 | Scott Cook
| Can someone please advise me to the rework procedure for removal and replacing Ceramic Chip Capacitors (e.g. 0805, 1206, etc.)? | | Is it necessary to pre-heat ceramic capacitors before soldering them onto a PCB with a soldering iron? Is this just
Electronics Forum | Mon Apr 13 07:55:48 EDT 1998 | justin medernach
Dear Justin, I am not asking for experiences with ovens as to whether you think they are capable of THT reflow. I am asking more specifically about actual req's and experiences with THT reflow, regardless of the oven used. Your answer does not hold i
Electronics Forum | Thu Apr 11 20:35:22 EDT 2002 | davef
Messy. Messy. Messy. Consider gluing these components, until you control your process. It is unclear to us that a single factor drives these defects, but multiple factors that need to be tuned to work well together. PAD DIMENSIONS * Some SM-782 pa
Electronics Forum | Mon Nov 01 03:09:05 EST 2004 | Grant
Hi, I would get a KIC profiler, and put thermocouples on the PCB to get a correct profile. You can enter your specs into the software, and it will give you a simple percentage letting you know where you are inside your process window. 0 is perfect i
Electronics Forum | Mon Sep 29 16:38:07 EDT 2014 | rgduval
These papers are a good place to start when learning about profiling: https://www.smtnet.com/library/files/upload/374_RSS_vs_RTS_revised_12-99_(no_pics).doc http://www.ipcoutlook.org/pdf/best_practices_reflow_profiling.pdf If you're having a lot o
Electronics Forum | Sun Apr 25 11:44:14 EDT 1999 | Earl Moon
| | We are just starting to manufacture a PCB with a .039" fine-line PBGA. We are currently seeing voids, mainly in the center, that are as much as 45%. We also intermittently see the corner balls of the PBGA smaller than the center balls. We are usi
Electronics Forum | Wed May 19 10:48:40 EDT 1999 | Glenn Robertson
| | | We are currently looking at purchasing some BGA rework equipment. Could someone give us the pro's and cons of IR heating (top/bottom)vs. hot air convection ? | | | All other tips are also welcome. | | | | | | Thanks | | | | | Philip, | | I ha