Abstract
The thermometric properties of Zener diodes in the temperature range 4.2–300 K are presented in this paper. It is expected that a change of doping concentration in Zener diodes of a few orders of magnitude, which influences their characteristics in the reverse direction, can also influence the characteristics in the forward direction. Zener diodes of type BZAP 83 manufactured in a variety of ways with different values of Zener voltage from 3.3 to 33 V have been tested. Their forward voltage versus temperature characteristics are monotonie functions, but for thermometric purposes the BZAP 83 diodes having a Zener voltage of 7.5 V are noteworthy because of their linear V = f( T) characteristic at I = constant over the whole temperature range from 4.2 to 300 K.
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