Electronics Forum | Sat Aug 03 03:28:16 EDT 2019 | alexeyzb
We use SNPb for such applications (PCBA for aircraft). We tried SAC305 but recieve no good quality, so now only SNPb. If you will find good solution - please write. Because now we have some problems with BGA - no SNPb balls. And need to reball (addit
Electronics Forum | Thu Sep 05 10:15:58 EDT 2019 | SMTA-Richard
There are multiple solder alloy options and we have tested many of them in a consortium project. There also are very specific challenges associated with testing using the -40/150 C profile. This is way too complicated to discuss in a chat room. Se
Electronics Forum | Thu Sep 05 11:05:35 EDT 2019 | SMTA-Tony
There are competitors to REL solder alloys from AIM. Tin-Copper-Nickel-Bismuth alloys (Nihon Superior) are an alternative option which do very well in thermal cycle testing. The reflow profiles required are similar to SAC305 profiles. You may als
Electronics Forum | Tue Nov 28 10:48:29 EST 2017 | georgetruitt
Some things to look into are the component finish, material and composition of the solder, design of the smt stencil, reflow profile or process atmosphere (N2 or air)also contribute to the solder result. The influence of the PCB itself should be co
Electronics Forum | Tue Nov 28 14:27:05 EST 2017 | emeto
Without the details I will tell you that you have too much paste. PCB Pad is probably way bigger than the contact lead surface of the part, you overprint, and in the oven this solder have nowhere to go and tilts your part. Check datasheet.Cutting sma
Electronics Forum | Sun Nov 26 09:41:00 EST 2017 | robertorocco
I nave a cp40c macchine but on the HD have a bad cluster the system operating win98 will no start. Can anyone help me About how to install the samsung control program? It possibile to copy this program from hold hard disk to new hard disk? Which nams
Electronics Forum | Wed Nov 29 06:24:49 EST 2017 | sarason
It should be possible to use Ghost to copy the Harddisk nut installing it in another machine. The next trick is to repair the image by cutting the missing bit from another image made on a Virtual Machine. Be careful to use the same version that was o
Electronics Forum | Tue Nov 28 08:27:34 EST 2017 | spoiltforchoice
When you get a BOM like this: PartNo;ID's;Qty;Package 1234;c1,c2,c3,c76,c99;5;0805 Does anyone use any simple tools out there that would automatically expand the BOM to one ident/line so that things are easier to find & compare with the pick and p
Electronics Forum | Tue Nov 28 14:09:37 EST 2017 | emeto
Most of it can be re-formatted in Excel. In cases like this I will spend the time to write some macros that does it automatically. If it is just a single occasion, just format it in Excel. You can turn commas into columns and rows. You can change col
Electronics Forum | Sun Jan 28 12:58:29 EST 2018 | spoiltforchoice
... Laziness, less work / Excel skills than Evitmovs solution and less money than something like Aegis. However we've had a recent increase in small but complex jobs as well as a good sniff of a large steady one and you can sneak all sorts into a new
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