[sdiy] Thermistor == tempco ??

[Jeff Farr]

Hmm, I'm having a bit of touble finding some of these on either mouser
or digikey.  I'd like to have them in my next order (which I'd like ot
place this week) so that I can get moving with prototyping and not
have to worry about missing components.

On 7/27/05, Tom Arnold <xyzzy at sysabend.org> wrote:
> On Wed, Jul 27, 2005 at 12:20:55AM -0400, Jeff Farr wrote:
> > Are these the same thing?  would that explain why I can't find a
> > "tempco" or "temperature compensated" at mouser?  It appears that
> > TelLabs no longer makes these?
> 
> TelLabs is owned by Vishay now through one of their divisions whose name
> illudes me at the moment.  They'll still happilly make the old Q81 if you
> want, but its not cheap.
> 
> From Mouser/Digikey what you want is a PTC tempco, not NTC.  Most
> thermistors you'll find will be NTC although rumor has it you can find some
> smt ptc units from panasonic.
> 
> Occasionally people try to do group buys of parts which is helpfull because
> the cost of parts like tempcos drops quite dramatically with quantity.
> 
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