[SI-LIST] Re: IPC-2152 trace current/temperature calculator
- From: dbrooks9@xxxxxxxxxxxxxxx
- To: "Jack Stone" <mediwheel_js@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Tue, 12 Jan 2010 22:38:19 -0700
I don't know if you have read the standard. There are a couple of= pages
that address thermal modeling, planes, alternative dielectrics, etc,= in a
very general manner. There are no quantitative adjustments included (= with
the possible exception of how to treat parallel conductors which is pr= etty
straightforward, and pretty obvious.) There is a Figure A-13 that rela= tes
to some estimated factor adjustments that can be used based on the dist=
ancebetween the conductor and a plane for 1 Oz traces in .070 thick Polyim=
ide Board (and a single curve for 2 Oz traces). The calculator does n= ot
incorporate these adjustments in its calculations. But these adjustments=
caneasily be made to the calculated results if desired. Overall, the gene=
ralities included in the Standard apply equally well to the calculated resu=
lts from the calculator.
The Calculator is based o= n Conductor Sizing Charts contained in the
Appendix (from Figure A-17, p 35= to Figure A-86, p83).
Doug
-------- Original Message --------
Subject: [SI-LIST] Re: IPC-2152 trace current/temperature calculator
From: Jack Stone <mediwheel_js@xxxxxxxxx>
Date: Tue, January 12, 2010 8:37 pm
To: "Loyer, Jeff" <jeff.loyer@xxxxxxxxx>, Doug Brooks
<dbrooks9@xxxxxxxxxxxxxxx>, "si-list@xxxxxxxxxxxxx"
<si-list@xxxxxxxxxxxxx>
Doug,
Does this new tool take into account the plane/dielectric structures both h=
orizontally/vertically?
Or is it just based on the curve fitting model?
One of the main topics in the August release IPC-2152 paper, was therm= al
modeling, and how previous iterations did not provide decent results. How is
current density taken into account in the tools analysis?
Jack Stone
(408) 765-9645
>-----Original Message-----
>From: si-list-bounce@xxxxxxxxxxxxx
>[mailto:si-list-bounce@xxxxxxxxxxxxx[1]] O= n Behalf Of Doug Brooks
>Sent: Tuesday, January 12, 2010 11:56 AM
>To: si-list@xxxxxxxxxxxxx
>Subject: [SI-LIST] IPC-2152 trace current/temperature calculator
>
>UltraCAD has updated its trace current/temperature calculator to
>incorporate the data from the new IPC-2152 "Standard for Determining
>Current Carrying Capacity in Printed Board Design."
>
>This calculator also allows for the adjustment of trace data for skin
>depthand other skin effect calculations.
>
>Learn more about it at http://www.ultracad.com/ucadpcb.htm[2]
>
>Doug Brooks
>
>
>
>Check out our other resources at http://www.ultracad.com[3]
>
>
--- Links ---
1 3D"#Compose"
2 3D"http://www.ultracad=
3 3D"htt=
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