[SI-LIST] Re: Maximum Current

Ishan-

The comments about 50kA and 1e8 amps were given tongue-in-cheek as a bit
of humor and were not intended to be taken seriously....


-Ray



-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ihsan Erdin
Sent: Friday, April 28, 2006 9:05 AM
To: tony_dunbar@xxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Maximum Current

I don't think an ibis model could be the correct source for that info
especially when it is derived from spice sims. It may be because of the
high
nonlinearity of the physical models for some devices that towards the
end
points of the voltage sweep the current may climb to ridiculously
high values, which would melt a thin wire immediately due to
jule-heating. I
guess that's why some vendors simply cut the current data at the runaway
point and set it to zero resulting in funny looking curves. I think
the correct answer lies in a thermal analysis. For interested, Synqor
has a
good app. note on this topic:
http://www.synqor.com/documents/appnotes/appnt_Thermal_Relief_Study.pdf
Regards

Ihsan


On 4/27/06, Dunbar, Tony <tony_dunbar@xxxxxxxxxx > wrote:
>
> Jin,
>
> According to many IBIS models, I think it's about 50kA.
>
> Regards (and apologies),
> Tony
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:
si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of Jin Zhao
> Sent: Thursday, April 27, 2006 7:51 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Maximum Current
>
> Does anybody know any information/documents/standards regarding the
> maximum electrical currents allowed in bonding wires, vias, traces,
and
> planes in packages and PCBs?
>
> Thanks in advance,
>
> Jin
>
>
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