Electronics Forum | Tue Feb 11 12:44:32 EST 2014 | cyber_wolf
Jigo, We have never had a need to do internal testing on solder paste, and your paste supplier should be able to tell you what the correct operating temperature range is. All of the big names in solder paste have tight quality control and I suspect t
Electronics Forum | Thu Sep 30 12:02:20 EDT 1999 | Wolfgang Busko
| I am having problems processing immersion gold boards. The achieved solder joints appear acceptable a la IPC-A-610, but the resultant joint does not fully cover the land, i.e. you can still see an outline of gold pad. | What is the best way to achi
Electronics Forum | Wed Jun 07 11:25:23 EDT 2000 | Dave F
In the portion of Chapter 1 on Flip Chips, Ken Gallio states (1.8.2.1) "tin/lead solder leaching or dissolving gold and form metal compounds, called dendrites, that greatly reduce joint reliability because of high brittleness." What is the compositi
Electronics Forum | Sat Feb 05 12:36:09 EST 2000 | Albert Hay
Hello everyone, I am cosidering the possibility of using Low-Melt solder for repair purposes. However, I am concerned about adding a new alloy (agent) to the board that already has the No-Clean solder on it. Also, is the Bismuth in the Low-Melt comat
Electronics Forum | Fri Jan 08 06:49:23 EST 1999 | John W
I'm in the process of moving from water washable flux to a full no clean process for the wave soldering process, thing's seem to be going well (so far...). The one problem I still have is cleaning the wave solder carrier's to remove the no clean flux
Electronics Forum | Fri Feb 13 03:26:07 EST 1998 | Brian S. Bentzen
Hi , The 4th stage in reflow soldering, the cool-down, I find is often over looked. A rapid cooling rate should give finer lead and tin structure with more bindings and thereby result in stronger solder joints. Can anybody give me some information
Electronics Forum | Tue Apr 27 16:44:05 EDT 1999 | Chrys Shea
| | Has anybody had experience wavesoldering 1 watt 2512 resistor packages?? I know it can be done, but are there reliability issues? | | | | We are in the middle of a new product and the question was posed to me "Can we use 2512 1 watt resistors o
Electronics Forum | Mon Nov 05 20:31:09 EST 2001 | davef
Most people do not intend to �solder� Type K thermocouples. They use solder to �attach� the thermocouple. Search the fine SMTnet Archives for a posting by Chrys Shea. 1 Common thermocouple types commonly used for thermal profiling are: * Type K �
Electronics Forum | Fri Dec 16 08:00:26 EST 2005 | jax
What you are most likely dealing with: Insufficient Pure Sn layer ( multiple causes ) Because elevated temperatures accelerate the diffusion process, the thickness of the Pure Sn layer will reduce during every thermal cycle... ( bakeing PCBs, S
Electronics Forum | Mon Aug 30 16:31:34 EDT 2004 | aburgos
Mike: When you stated that you are looking for a different AOI to replace GSI Lumonics because of 0201 solder paste inspection. Does that mean that you have a 1X scanner and it is not giving you reliable results? Have you tried the 2X scanner from G
