Silicon Carbide (SiC) chips can operate in 600 degrees Celsius or 1,112 degrees Fahrenheit where conventional silicon-based electronics -- limited to about 350 C -- would fail.In the past, integrated circuit chips could not withstand more than a few hours of high temperatures before degrading or failing. This chip exceeded 1,700 hours of continuous operation at 500 degrees Celsius - a breakthrough that represents a 100-fold increase in what has previously been achieved, NASA said.More info at NetworkWorld.
Typically as chips become more dense, they are constrained by their own heat, with modern processors using up to 100 watts per square centimeter. That is already pushing the upper limit of current cooling technology, which relies on fans to blow air over heat sinks.
The new silicon carbide differential amplifier integrated circuit chip may provide benefits to anything requiring long-lasting electronic circuits in very hot environments such as jets, spacecraft and industrial machinery.
In particular, NASA said SiC applications will include energy storage, renewable energy, nuclear power, electrical drives. The use of the high temperature packaging and operation of SiC power modules for its power electronics equipment will bring about the benefits of increase in power density, reduction in heat sink requirements (thus smaller size and mass), and higher frequency operation that also results in lower mass for the filters and transformers.
NASA develops chips that still work at 600°C
Posted on Monday, Sep 17 2007 @ 07:28 CEST by Thomas De Maesschalck