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It is unless you need to go to a higher temperature range. The metal can, TO-46 part only goes to 148.5°C. The other plastic packages are even lower. The LM34AH metal can part sells for USD 19.41 at Arrow.
There is a whole family of these simple thermometers, but all suffer from the same limitations.
A LM34DZ is a HELL of a lot more simple than trying to use a diode or transistor to measure temperature.