Electronics Forum | Wed Apr 27 14:10:30 EDT 2005 | Bruno Lalonde
I m looking to implement a maintenance program here at Exfo, I'm looking form the norms on the hand soldering iron (tip to ground resistance and Voltage linking). Thank
Electronics Forum | Wed Apr 27 21:59:34 EDT 2005 | davef
Check with your soldering iron supplier. We'd expect them to say: * Tip to Ground Resistance:
Electronics Forum | Wed Jul 22 13:50:49 EDT 1998 | Justin Medernach
| My firm has just begun it's first PCB that will use BGA packaging. I have been reading up on the processes involved with BGAs and was wondering if you need to apply solder paste to the pads prior to applying heat and mounting the part to the board
Electronics Forum | Thu Apr 28 08:08:46 EDT 2005 | Bruno Lalonde
Thank for your quick answer, waht to you mean by yammering, I'm sorry my english is not very good
Electronics Forum | Thu Apr 28 09:11:34 EDT 2005 | davef
Don't apologize. Your English is fine. * In Enlish look here: http://www.freesearch.co.uk/dictionary/yammering * In French, maybe: Parler � tort et � travers
Electronics Forum | Tue Jul 28 16:37:24 EDT 1998 | Terry Burnette
| I think that in general it's best to deposit paste in order to increase the part standoff. This helps improve the fatigue-life of the joints by providing more strain relief. But I know from experience that it's tough to deposit paste during the r
Electronics Forum | Thu Feb 24 00:37:08 EST 2022 | joshsvoboda
I have a pcb with an ENIG finish that is using a 144 pin LQFP and being soldered withSN100C/NC258 T4 paste. I used a oven profiler where the probes are taped down to the joint and the profiling software adjusts the program for the best profile for
Electronics Forum | Thu Feb 24 15:36:34 EST 2022 | dontfeedphils
Looks like a decent profile. Only recommendation I have would be to possibly try and high-temp solder the thermocouples rather than the aluminum tape/kapton, only because you can get air-gaps and inaccurate readings using the tape method on assemble
Electronics Forum | Thu Feb 24 20:13:22 EST 2022 | dwl
They don't look that bad, especially for SN100. There is evidence of wetting on the toe and the paste on the pad seems to have reflowed properly. What does the heal look like? That's the more critical part of the solder joint for Gull leaded parts.
Electronics Forum | Thu Feb 24 20:39:05 EST 2022 | joshsvoboda
there is evidence of wetting on the heel. This is the first time I have had this type of joint using SC100C on a leaded part. Usually there is at least some wetting on the sides instead of just looking like it is pressed in and sitting on top of the
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