Electronics Forum | Mon Jun 07 17:43:42 EDT 2004 | russ
Doing a little poll here. How many of you are using lead free paste and what type/brand are you using. We are using Alpha OM338 SAC405. I am not liking it very much so far. It seems to be too viscous. It is definitely the thinnest stuff I have e
Electronics Forum | Thu Apr 06 16:42:44 EDT 2006 | russ
this is all good jay but would WML have to say about this paste? I'm gonna wait for his response before I do anything! I am bringing in some samples of this soon to try for myself. I have a part that the manufacturer says to run with a paste with n
Electronics Forum | Fri Mar 04 01:08:19 EST 2011 | kemasta
Thanks davef Bridging:- There is no heat sink on the BGA, the heat sink will be fix after relow. I do believe paste had something to do with it, but currently this defect didn't appear so oftenly, so we think that the main root cause is not from the
Electronics Forum | Fri Aug 10 18:06:52 EDT 2012 | mfergus
Anyone have experience printing solder paste for a Toshiba SSM3K15CT(TPL3) FET with CST3 package? Using 1 to 1 rectangular apertures with a 4 mil stencil and Alpha OM 338 #4 powder size lead free solder paste. Print head speed is 15 mm/sec and solven
Electronics Forum | Sun Sep 27 22:39:55 EDT 2009 | rajeshwara
The same issue i faced 2 yrs before , i sugest 1. Use stencil of 4 mils ( Take care of Aspect Ratio and Area Ratio ). 2. Use Solder Paste of Type 4.5 and Viscosity in between 1100 to 1300. ( Try Solder Paste of Cookson or Alpha metals : OM338 T45-L
Electronics Forum | Sun Sep 02 13:45:06 EDT 2007 | mun4o
Hi, we use om338 from alpha metals in our smt production lines.I wont change this solder paste with kester em 918.Is anybody use this solder paste?what yo think abaout this paste.Is it good?
Electronics Forum | Thu Sep 23 16:23:08 EDT 2004 | russ
Pb free pastes do not wet out like 63/37. Their are no claims from any manufacturers that I am aware of that say it will. Your "little solder balls" are likely caused from oxidization during reflow. What type paste are you using 3,4,5? What are t
Electronics Forum | Mon Dec 25 08:43:35 EST 2017 | arjunkolavara
Hi , We are having Pin hole issues on the passive locations in the board after the SMT reflow process. Details: PCB surface Finish : ENIG . Solder paste : Alpha OM338 – M13 / Indium SMQ92J Location : Its Random and more on passive components. {
Electronics Forum | Tue Nov 17 22:36:17 EST 2009 | rajeshwara
Hi All Plz help , we are manufacturer of Set Top Boxes , where we use ST BGA 5202 ,Paste : ALPHA METAL OM338-T45-LF & STENCIL : 4 MIL & we also tried 5 mil . Problem : At first Test BGA work fine but after some days Assembly dead functional and when
Electronics Forum | Mon May 22 18:19:29 EDT 2006 | Steve
I have read some threads about poor wetting on palladium-silver (Pd-Ag) coated components. I followed the suggestions, but I am still having a problem. The part is an 0603 chip type (Vishay varistor). The Process: solder paste is lead-free Alpha Met
