In terms of damaging the actual gate with overdrive, I think
there's no meaningful time limit, it's all but instantaneous if it
happens.
For the whole device in overload, it depends on the circumstances
such as drive level, load impedance, supply current limiting etc.
With the earlier, less rugged, versions trips operating in a few
ms protected them from my worst efforts.
Steve
My new 1.3K-FA uses a MRF1K50H output LDMOS transistor. Does
anyone know how long it would take to destroy the gate junction under
overdrive conditions. Is there any system fast enough to prevent
destroying the transistor?
73, Roger
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