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We present filament behavior of STI type DeNMOS devices using detailed Transient Interferometric Mapping experiments and 3D TCAD simulations. Device behavior at different TLP currents is discussed. The impact of localized base-push-out, power dissipation because of space charge build-up, regenerative NPN action and various events during the current filamentation are explored. By uniform turn-on of...
Bipolar ESD protection devices subjected to low current long pulse stress can sustain a relatively long time during thermal second breakdown without any damage. The effect is related to a particular current filamentary behavior, which is observed optically by TIM and explained by device simulation. It is also shown that the second breakdown is initiated at the edges of the device when a moving current-tube...
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