[R-390] OT: Pass Transistor Question

[2002tii]

Jon wrote:

>I see what you mean.  The MJ15003 has an Ft of 2 MHz whereas a 
>listing in an old Motorola catalog shows 200 kHz to the 2N3773 plus 
>the MJ15003 has another 100 watts of dissipation, I think.  Looks 
>like it IS the "Hot" setup.

All true, plus another 5A of rated collector current (+33%).  And 
what those specs don't tell you is the greatly increased safe 
operating area of the MJ15003.

Since you don't need to match them, you only need four (you ARE going 
to do both channels while you have it apart, aren't you?) -- about 
$15.  Compared to the hassle of going back in when it fails. . . .

Best regards,

Don