[SI-LIST] Re: Etch resistors
- From: Ken Hayden <khayden@xxxxxxxxxxxxxxxxxx>
- To: chris_landrum@xxxxxxxxxx
- Date: Fri, 19 Mar 2004 08:59:50 -0500
Chris,
Have you considered the inductance of such a structure? I would expect the L/R
ratio to be higher than might be achieved in a power resistor. This might lead
to stability problems, depending on your application.
-Ken Hayden
"Landrum, Chris" wrote:
> I would like to use a 20-50 mOhm etch resistor in a power supply circuit on
> a board that I am working on. The PCB manufacturer is actually VERY
> accurate when it comes to forming these etch resistors in etch. The etch
> resistor will save a bundle of $ compared to the mOhm range power resistors
> (high volume product). I will obviously be sizing the etch for the current
> demand, and I will be considering heating of the etch. Can anyone think of
> any reason that I would NOT want to do this? A reason that I am not
> considering perhaps?
> Thanks.
> Chris
>
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