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LM5009 data sheet shows an ES3D catch-diode, but elsewhere the TFSL1100 is specified ? Which is preferred and why ?

Other Parts Discussed in Thread: LM5009

There seems to be some differences between the data sheet suggestions for the catch diode and other examples in the literature.

I am looking for a best conducted / radiated EMI solution (rather than best efficiency). What is the recommendations for this with the LM5009 ?

Is this the best device for high (70V nominal)  Vin / 18V out for EMI ?