Electronics Forum | Mon Jan 20 03:59:27 EST 2003 | emeto
Hi Burb, I think you should try with paste which consist Ag.Or it might be other:Ag has different thermal characteristics, so you probably stay too long in the reflow zone.That's one reason for granular joints. good luck!
Electronics Forum | Sun Mar 30 20:21:44 EST 2003 | iman
we are using a "recommend supplier profile", and we have gotten back to the talking table with them over this profile specs. Thanks for the pointer, have ask them on this issue. Have also asked for their phase-transistion diagram to understand their
Electronics Forum | Wed Apr 09 09:44:12 EDT 2003 | iman
yes, we r profiling direct thermocouple attachment to the LGA pads. based on direct experience of yourself or others, what paste (brand/type3?/type4?/alloy?/flux%?) gives the optimal repeatable characteristic-patterns to minimize this defect?
Electronics Forum | Fri Apr 30 15:13:55 EDT 2004 | SWagner
You could comprimise on the E-Fab stencil and buy a laser cut nickle, it will have similar release characteristics to an E-Fab and only costs $600, they can be purchased from Stork Veco, they are located in Europe.
Electronics Forum | Sun Jun 05 21:48:05 EDT 2005 | KEN
bright tin has demonstrated remarkable reduction in wisker formation. Organic inoculations and plating thickness are two very important characteristics in wisker formation.
Electronics Forum | Tue Oct 04 12:49:59 EDT 2005 | patrickbruneel
The amount of times the tin/lead solder can be melted and solidified is unlimited and the heat cycles do not affect the solder characteristics. The only reason for changing the solder pot is when impurities are at or over the maximum levels.
Electronics Forum | Mon Feb 13 09:54:45 EST 2006 | TZ
Why not use microwave oven, it would be faster ? Be careful, rheology and all paste's characteristics are strongly dependent from the "not stressing" reaction moving from low temperature to Room Temperature. Best regards TZ
Electronics Forum | Mon Mar 06 09:08:57 EST 2006 | Rob
Hi Ken, You're right - they're not doing anything smart, they are just using a rechargable battery pack. It's not even the latest or most suitable technology for the application (Li-ion has far better temperature characteristics & far high capacity
Electronics Forum | Tue Mar 14 02:31:51 EST 2006 | arnold
is there a required storage room temperature for core (toridal and e-core. we are experiencing a rejection on inductance reading of our units, but when we checked the number of turns of transformer and the AL value of e-core it all passed to its requ
Electronics Forum | Wed May 17 17:27:58 EDT 2006 | smt_guru
My consultancy firm will perform a process capability analysis on your 0201 feeder performance characteristics. We will leverage and integrate various feeder designs utilizing electro-mechancial design modeling and simulation. Please consult us in
