Electronics Forum | Mon Jun 28 14:36:34 EDT 1999 | John Thorup
| | I am looking for a way to clean solder off of QFP packages. I'm thinking a chemical method would be easy, as long as the chemistry doesn't attack the leads themselves, or the package. | | Any suggestions? | | | Dear Matt, | | I have a customer
Electronics Forum | Fri Mar 12 17:16:21 EST 1999 | Mike Konrad
We are a manufacturer of Ultrasonic stencil cleaning systems. We do not promote our own chemistry, rather we recommend that the user choose a chemistry that best suits the application and environmental considerations. We have extensively tested Ze
Electronics Forum | Wed Jan 13 21:46:03 EST 1999 | Dave F
| I am currently using Alpha WS629. I have a Malcom SPS-1 Solder paste mixer. I find that the mixer after running for the recommended mixing time | (10 to 18 Min) ball's the solder in the jar. | | 1) Is there any other Manufacture having the same
Electronics Forum | Fri Oct 09 23:17:05 EDT 1998 | kallol Chakraborty
| | I need to set a cleanliness limit for our incoming boards. I know that some people use 14-10 microgr. sq. in. But how can I determine what is best for me. | | Can anybody tell me if there's a standard for this. | | Right now we are using an Alph
Electronics Forum | Thu May 14 19:05:02 EDT 1998 | Mike Konrad
Dave, Ionic contamination testers are considered to be a valuable tool to determine the cleanliness of both bare boards and post solder boards. There are some instances when SIR testing is more suitable for determining cleanliness than ionic contamin
Electronics Forum | Fri Dec 12 10:28:30 EST 1997 | David Syracuse
I am interested in locating a water soluble resist mask that does not leave a residue after wash and is easy to work with during the screen printing process. I have tried the Alpha Metals 110 and 220 solder mask and have found that it does not leave
Electronics Forum | Tue Apr 29 15:45:09 EDT 2003 | davef
We have mixed bar solder from alternate suppliers in our wave soldering machine. Issues that you need to address before changing your solder supplier are: * Assure that the alloys are the same. In this, consider imaginative people may be reporting
Electronics Forum | Tue Apr 13 13:55:46 EDT 2004 | arcandspark
I have samples coming in, AIM and ALPHA, Multicore use to have manufacturing in the same town but disappeared. Your right about getting better help fro other, Indium is the worse I have ever had to deal with. They act like I am bothering them when I
Electronics Forum | Wed Apr 14 05:44:36 EDT 2004 | hun
Hi All, Just have a share with you guy. We are using T4 solder paste and also E-Stencil. We ahd try out Alpha, Kester, AIM and Qualitek. The result show Alpha had a very very heavy stack flux and can't get it clean off even by chemical
Electronics Forum | Fri Nov 09 08:57:56 EST 2007 | bbarton
By and large, the industry has determined that SAC alloys are the "best fit" for replacement of SnPb in our industry. SAC305 seems to be the default alloy at this time. There are several other alloys out there, each with their own strengths and weakn
