Hello E/E Engineers,
I am in the way of choosing cables to extend this TO-92 type temperature sensor legs so that I can place it under the target battery or even extend it into a refrigerator / freezer.
MCP-9700A
I know there is out-of-box 1-wire sensor packaged with long cable lead but the part`s origin is in question. I must create this by myself so that I have the part`s origin documents.
I am glad you like my choices.
My chosen signal cable is also hand-picked for this type of TO-92 sensors.
According to my experiences, we can choose between cheap thermistors and more expensive TO-92 temperature sensors.
Thermistor-temperature characteristics vary from factory to factory and model to model. Factory only provides you a table of discrete data of thermistor value and temperature. It is neither continuous or an explicit function. So it is very hard to apply the measured results.
Expensive temperature sensor like Analog Device TMP can output a very linear relationship between the output voltage and temperature. It has built-in circuit to do this. Very easy to use and apply. What you paid is what you get.
Then, for the cheaper Microchip MCP9700A, its output voltage to temperature relationship is not as linear as AD TMP sensors. However, Microchip did a statistical correction of the output readings from a large sample of their MCP9700A. Then, they generated a non-linear function to describe the voltage-temperature relationship. The correction equation is shown in its data sheet. Apply this equation to your output readings and then you will get +/- 1C accuracy. Contact Microchip support when you face issues or ask here. 
