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ashishbondia Post subject: Mounting Inductance Posted: Tue Dec 02,
2008 2:43 am Captain Joined: Wed Aug 16, 2006 8:20
am Posts: 23 Location: India Hi! Does anyone has any idea
of how to model the effect of the Solder metal inductance use for mounting
the various components on RF board. _________________ Ashish
Bondia, Design Engineer- RF Top IR Post subject:
Posted: Tue Dec 02, 2008 10:31 am Site Admin Joined:
Mon Jun 27, 2005 2:02 pm Posts: 373 Location: Germany You
can use an additional layer of metalization in your substrate definition.
You need to assume the thickness of the soldering tin and also find
out the composition of the tin used. I never did that and I
think that this is an ''over-kill'' unless you are talking on a frequency
above 25GHz or doing a research project on the capabilities of your
simulation tool Top ashishbondia Post subject:
Posted: Thu Dec 04, 2008 2:59 am Captain Joined:
Wed Aug 16, 2006 8:20 am Posts: 23 Location: India The whole
idea was to find out the degradation in SRF of the inductors due to
addition of the Solder metals on their terminals while mounting. I need
0.5 nH inductors at some places for matching. even a 10-20 % deviation
from this value degrades the performance. I was thinking if I can estimate
the inductance added by the solder then I might even think about not
using an inductor and just short the pads (for inductor) on my board
by sufficient volume of solder metal. _________________ Ashish
Bondia, Design Engineer- RF
Posted 11/12/2012
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