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A DC technique for determining GaAs MESFET thermal resistance

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1 Author(s)
Estreich, D.B. ; Hewlett-Packard Co., Santa Rosa, CA, USA

A novel DC electrical method (DCEM) for measuring the thermal resistance of GaAs MESFETs using the temperature dependence of the gate metal resistivity is described. The method requires a DC current to be passed (end-to-end) through the gate stripe to monitor the average temperature of the channel. The DCEM can measure the average thermal resistance over the entire operating range of a Schottky-gate MESFET using only DC measuring instruments. An example is given showing the thermal resistance of an ion-implanted 0.5-μm GaAs MESFET as a function of DC power dissipation

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Components, Hybrids, and Manufacturing Technology, IEEE Transactions on  (Volume:12 ,  Issue: 4 )