Base Spreading Resistance from S Parameters

Does this mean there will not be a way to arrive at Rbb for this transistor from its datasheet alone?

As has been pointed out, the phrase "substantially more" doesn't describe the difference.

Yes, absolutely.

me

It's more the rule than the exception. The data sheet contains the data tha t marketing thinks will help sell the part. I've certainly run into at leas t one data sheets where an inconveniently large input capacitance wasn't li sted.

Where worst case limits are specified, there's an implication that every pa rt is measured - which costs money. Sensible people put in "guaranteed by d esign" limits, which are cheaper, but there aren't that many sensible peopl e writing data sheets - marketing always wants to get involved, and their m otivation is to sell more parts, rather than to make the customer happy (wh ich is a better long-term aim, but balance sheets are short term assessment s).

The transistor table on page 501 is worth the price of the book.