Re: Making thick-film resistors

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#2475

From: Roger Lascelles
Date: Fri, 11 Jan 2002 09:48

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I read that carbon film is inferior to metal film at 500 MHz ?? up.  The
writer said that carbon acts like lumps joined together by tiny points of
contact and there is capacitance between the lumps.  So you may want metal
film - which is what many SMD parts are.

Roger


"Russell Shaw" <rjshaw@iprimus.com.au> wrote in message
news:3C3E2DF7.27B47935@iprimus.com.au...
> Hi all,
>
> I need to make small resistors (10-200ohms) operate at a
> few GHz, and so be non-inductive/capacitive. I can do it
> by depositing carbon paste with a stencil.
>
> What binder could you mix with carbon powder that remains
> conductive?
>
> Is there carbon ink that stays conductive?
>
> Can carbon be vacuum deposited?
>
> How is carbon put onto the tracks of potentiometers?
>
> --
>    ___                                           ___
>   /  /\                                         /  /\
>  /  /__\ Russell Shaw, B.Eng, M.Eng(Research)  /  /\/\
> /__/   / Victoria, Australia, Down-Under      /__/\/\/
> \  \  /                                       \  \/\/
>  \__\/                                         \__\/

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From: "Roger Lascelles" <rogerl@tpg.net.au>
Newsgroups: sci.electronics.design,aus.electronics
References: <3C3E2DF7.27B47935@iprimus.com.au>
Subject: Re: Making thick-film resistors
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