Measurement of junction temperature of an AlGaAs/GaAs heterojunction bipolar transistor operating at large power densities

W. Liu, Ayça Yüksel

IEEE Transactions on Electron Devices · 1995 · 58 citations · 7 references

Concepts

Abstract

An electrical method to determine the junction temperature of a power bipolar transistor is presented. The success of this method does not rely on the constancy of thermal resistance over the wide range of operating temperatures. It is hence suitable for transistors operating at high power densities where conventional measurement techniques would not apply. Using this method, we establish that the junction temperature can be 40/spl deg/C higher than the product of the low temperature thermal resistance and the power dissipation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

References

7