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PTC thermistors

PTC thermistors

PTC thermistors

Does anyone have a source for surface mount PTC thermistors? Specifically, I am looking for a thermistor that would have a room temperature value in the 10k to 30k range and a 0.4%/*C or higher slope.

The only supplier I found that had PTCs with that high of a resistance was a place called Quality Thermistor (thermistor.com). The prices they quoted were unbelieveable - not only were they not in the ballpark, they weren't in the same state.

thanks in advance.

RE: PTC thermistors

besides thermistor you can use special temp.sensor IC
or even transistor or diode as sensor.

What is your application? How many/year? What kind of accuracy do you need?

Please read FAQ240-1032
My WEB: <http://geocities.com/nbucska/>

RE: PTC thermistors

Quality Thermister is frankly... an embarrasment. Their prices are so far beyond usable I too shake my head.

Have you done a Digikey or Mouser search?  Digikey shows 12 pages of PTCs in its search engine(perhaps they're all fuses though).

Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com

RE: PTC thermistors

yes, I've searched through those sources. I'm thinking I will have to find some other route. The problem is it has to be as cheap as possible - customers won't want to implement this if it is too expensive.

The PTC would be used as a direct replacement for a resistor in the analog system loop.

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