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RE: How do I tell if I have a 200C or 200CX

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Thanks again, Paul.

I do now have one more question that I would appreciate your help with:

I am finding that the original NEC outputs do not seem to be readily available except from eBay. I am also hearing that these devices are some of the most commonly counterfeited transistors on the market. Looking at the datasheets, and reading various forums, it seems that the MJ21193/94's, which you used in the 200cx, are pretty good direct subs for the NEC's (better current and power handling, slightly higher hFE, comparable fT, etc).

The one thing I can't tell from the datasheets I've found is how the On Semi's and NEC's compare in terms of thermal gain behavior. Can you tell me whether the 200c bias circuit would be stable with the MJ's? I.e. would a 200c bias and driver setup with MJ outputs be a viable solution?

Thanks again for your help,
Paul

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