"John-Del" schreef in bericht
...
On Feb 10, 1:01 pm, "petrus bitbyter"
wrote:
So I have an SMD semiconductor - most likely a transistor - in a SOT-223
package marked H72P. Found several lists of SMD semicondector codes on the
net but no H72P. Anyone knows what kind of beast I'm dealing with?

petrsu bitbyter

What I do is look for another device just like it elsewhere on the
board. Hopefully there is at least one more. From there, with a dmm
you can find out if it's a transistor, polarity, and whether it has a
resistor internal (digital transistor).

It's a small board and there's only one one transistor with that mark on it.
It seems to drive a 2SD882 medium power transistor as it's middle leg is
connected to the base of that 2SD882. I have no schematic and I don't like
to reverse engineer the whole board especially as I found too many unknown
components on it. Thanks anyway.

petrus bitbyter