[Boatanchors] Resistor Size

Ron via Boatanchors boatanchors at mailman.qth.net
Tue Apr 29 12:31:56 EDT 2014


Generally, resistors have gone down in size over the years. This is due to 
materials of higher thermal conductivity (leading to better heat dissipation),
that can also withstand a higher operating temperature. 

Specifically to this query, I would check the part against the size spec. just 
to make sure you got tha correct part.

-- Ron


On Tuesday, April 29, 2014 8:45 AM, David C. Hallam <dhallam at knology.net> wrote:
 
I just received a a parts order from Mouser with a number of 2W 
>resistors I needed.  I normally order Xicon metal oxide but one size 
>came as Vishnay metal film.  These resistors are bout the size of a 14/W 
>carbon comp.  I just wonder how they could have a 2W rating for a 
>resistor that small.  The WV rating on them is 350V so I guess it's OK 
>to use them.  But they surely look small.  I will have to recheck my 
>order to see if that is what I ordered or if Mouser substituted.
>
>David
>KW4DH
>
>-- 
>"I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."
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