On 10/27/25 11:41, Christian Corti via cctalk wrote:
On Mon, 27 Oct 2025, Jon Elson wrote:
Oh, it apparently is Silicon. So, an MPSH81 should
really do well.
I think it won't. It is obsolete and isn't sold any more.
And especially, it is not a switching transistor, so it
will perform very poorly in a digital circuit.
I have used its NPN mirror (MPSH10) in switching circuits
and they work quite well, giving ~1ns 10-90% rise and fall.
I have not used the MPSH81 quite as much. I most recently
use the MMBTH81 and MMBTH10 in the SO23 package.
I think you really ought to try one and see how it works.
Obsolete is not a big hurdle, several distributors usually
have a bunch of these parts.
Jon
