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From: "Phil Allison"
Subject: Re: Resistors for r.f. applications
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
Date: Sun, 5 Jan 2003 00:02:48 +1100
NNTP-Posting-Date: Sat, 04 Jan 2003 23:52:33 EST
Organization: Telstra BigPond Internet Services (http://www.bigpond.com)
"Hal Murray" wrote in message
> >I tried a web search for resistors that stay resistors, and about the
> >same value, up to at least 10 MHz, but found it surprisingly difficult
> >to find anything. I need some 50 ohm 0.5 W and some low values like 1
> >ohm, very low power.
> Digital gear uses SMT resistors at much higher than 10 MHz.
> I've never seen any specs on inductance or capacitance, but I admit
> I haven't looked for it. It's not enough of a problem that anybody
> worries about it. I expect it's normally dominated by PCB layout
** In most situations the inductance of a resistor at 10 MHz and above
does not matter a hoot. But in some it very much does. One is with dummy
loads for terminating co-axial cables and testing RF power output and
another is in precision RF attenuators for test and measurement work.
Usually these jobs involve fairy low value resistors, from 10 to 1000 ohms.
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