Electronics Forum | Sat Jun 17 08:57:23 EDT 2000 | Chrys Shea
A few more tricks to try: - Got a hot air rework machine? You can get more controlled heat on the area and lower the risk of damage to the fab. I never got topside fillets un unrelieve ground planes until I went to convection preheat on my waves.
Electronics Forum | Tue May 23 20:39:37 EDT 2000 | Dave F
Scott: Sounds like fun: � Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the test method. � Among things, IPC-TM-650 talks to getting pads off-of boards. For instance: Method 2.4.8 is for
Electronics Forum | Mon Nov 01 22:16:04 EST 1999 | Dean
Without a detailed description of the suspect parts It is difficult to pin-point the exact solution to your process problem. However, whenever possible avoid non-value added additions to your current process. Here is the reality of the situation:
Electronics Forum | Tue Aug 18 11:45:17 EDT 1998 | Zambri
| Bob | I have had problems with spotting on gold contacts for many years and have spent many hours working on ways to solve this problem. Once a source of the problem is found and corrected the next month another source will crop up (new operator o
Electronics Forum | Mon Nov 08 17:47:58 EST 2004 | davef
Russ: On "usually get some mask material from our board house. It cures with heat so it works really well in our applications.": We're unsure about the type of mask that you are using, but be careful [we used to do this, also]: * Final cure of the L
Electronics Forum | Tue Feb 19 10:47:47 EST 2019 | rgduval
I'm with Steve. Check the datasheet, and make sure that the terminations are meant for solder application, and not conductive epoxy. I had that happen a year or so ago with an MLCC. Drove us nuts for two days (not to mention the significant rework
Electronics Forum | Mon Apr 16 09:01:18 EDT 2007 | Steve
The best station I've ever worked with is a focused IR station from PDR. The station that I had was called a; "Lightmaster Pro". They have a different model name now, but you can see a datasheet for it at: http://www.pdr.co.uk/Datasheets/PDRX410-IR-
Electronics Forum | Wed Jul 22 11:20:25 EDT 1998 | Russ Miculich
Barbara, I worked for 5 years with advanced materials including silver filled thermoplastics and epoxies for Alphametals. There is a trend towards lead free "solder paste". Some companies are using an Indium alloy paste and others are using a "lea
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
Electronics Forum | Wed Apr 21 00:35:31 EDT 1999 | Scott Cook
| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185
