The Mentor Graphics MicReD T3Ster, a thermal measurement system, is fully equipped to deliver the efficiency, repeatability, flexibility, and ease of use needed for this application. There are at least ten good reasons to include thermal measurements as a routine step in any electronic component or system design process. Amid all the promotion of solid-state superlatives ranging from data rate to feature size to LED light output, one characteristic is never touted: junction temperature. That’s because junction temperature (TJ) is an undesired but unavoidable side-effect of high currents and/or switching speeds. A p-n junction, whether it is one of millions on a CPU chip or the only one within a power LED, generates heat.

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