[Amps] Carbon film or metal oxide film resistors for low-power RF circuits?

[Jim Barber]

Very interesting responses, thanks.

DigiKey stocks some Stackpole RNC and "RNCS", which Stackpole claims are 
"Ideal replacement for costly Tantalum Nitride resistors" .

I wasn't able to quickly find stock on the Vishay-Dale parts in the 
usual places, but the data sheet looks good.

Now if I could only learn to solder surface-mount components without 
making such a mess.

Thanks and 73,
Jim, N7CXI

Pete Lancashire wrote:
> Not to push on company over another, I found some of this to be helpful
> 
> http://www.vishay.com/resistors-discrete/list/product-31025/
> 
> For those oldtimers, Vishey bought Dale.
> 
> 
> 
>> Hi Jim,
>>   I'd suggest using mil type RLR or if you realllly want long term
>> reliabilty use type RNC.
>>
>>   Either one will last near forever.  No comparison to carbon comp or even
>> film.
>>
>> 73 & Good morning,
>>   Marv WC6W
>>
>> http://wc6w.50webs.com/
>>
>>
>> --- On Wed, 8/12/09, Jim Barber <audioguy at charter.net> wrote:
>>
>>> From: Jim Barber <audioguy at charter.net>
>>> Subject: [Amps] Carbon film or metal oxide film resistors for low-power
>>> RF circuits?
>>> To: "AMPS" <amps at contesting.com>
>>> Date: Wednesday, August 12, 2009, 1:06 PM
>>> If you wanted a precision RF
>>> instrument to last a long time without
>>> significant component drift, would you use carbon film or
>>> metal oxide
>>> resistors?
>>>
>>> Assumptions:
>>> (1) Little to no RF power dissipated in the resistors
>>> themselves
>>> (2) Frequency less than 60mhz
>>> (3) There would be room for physically larger 1-watt
>>> metal-oxide
>>> (4) Cost isn't an issue (repair quantities, mostly)
>>>
>>> Looking for opinions, of course. I find myself replacing
>>> carbon
>>> composition units all the time, and was wondering if
>>> metal-oxide would
>>> be "better" than carbon-film for these purposes.
>>>
>>> Thanks,
>>> Jim, N7CXI
>>>
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>>
>>
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