I am a bit late in responding but I wanted to chime in to say that load
dump and ESD are very different and I don't think the methods of ESD
protection I mentioned would be applicable to load dump.

ESD is roughly a 1nF cap charged to between 4kV and 15kV with about a 100
ohm series resistance. Rise time is about 1ns and fall time about 500ns.
Current is about 10 to 100 amps peak. Total energy less than 1 Joule -
usually about 10mJ.

I am less familiar with load dump but I would guess it would typically have
a rise time of about 1us, fall time of about 10ms, current about 10 to 1000
amps, and a total energy of about 10 Joules, maybe more. In other words, a
sledgehammer compared to ESD (which is more like a small rock thrown very
fast)
--=20
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