Sensistor vs Thermistor

[alfa88]

I've been remastering a 70s vintage digital multimeter kit and I've managed to find replacements for most of the parts but one of the parts is called a sensistor. I sort of assumed that the part is the same thing as a positive coefficient thermistor. Opinions?, Guidance?

 

[bertus]

Hello,

You are heading in the right direction.
This is what the wiki has to tell about the sensistor:
https://en.wikipedia.org/wiki/Sensistor

Bertus

 

[alfa88]

Yea, I saw that Wiki. Since there doesn't seem to be much info on the sensistor's specs other than ambient resistance I guess I'm at the mercy of the thermistor gods

 

[bertus]

Hello,

The special semiconductor resistors are mentioned in application notes for log amplifiers.
The application notes mention the Q81 resistor.

Bertus

 

[bertus]

Hello,

The KTY series from NXP seem to be the silicon PTC's like the sensistor.

Bertus