Re: Making thick-film resistors

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#2467

From: Spehro Pefhany
Date: Fri, 11 Jan 2002 01:47

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In sci.electronics.design Russell Shaw <rjshaw@iprimus.com.au> wrote:

> 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.

You should be able to buy this stuff from the makers of inks for
thick-film hybrids. You can silk screen it on (control of viscosity,
pressure and squeegee angle and spacing from the substrate are all
important in controlling the thickness). Then it is "fired" at a high
temperature. You can trim said resistors with abrasive or lasers. 

Is it really such a big deal with regular resistors? I can't imagine an
0402 or 0201 resistor 10-200R resistor having much inductance or
capacitance at those frequencies. 

Best regards,
-- 
Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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From: "Spehro Pefhany" <speff@interlog.com>
Subject: Re: Making thick-film resistors
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