Here's a Mouser search for stuff with Vce of 12v+, Ic of 600ma+, Ft of 300+:
? ??1z0y4diZ1z0y4ciZ1z0w69sZ1z0wajfZ1z0s5p6Z1z0w3wpZ1z0w6rxZ1yxzg4rZ1z0w65eZ1z0w693Z1z0w6r0Z1z0w64vZ1z0w6i8Z1z0w6xnZ1z0wa4fZ1z0w6fhZ1z0vzb6Z1yyb05lZ1z0w6ylZ1yy9vthZ1z0w5kaZ1yyyiibZ1z0wa61Z1yyziiqZ1yyzhtqZ1yyzh82Z1yyzht3Z1yyzhfuZ1yyz8ghZ1yyzhg7Z1yyzheyZ1yyyjktZ1yix7auZ1yyzh3lZ1yyzg3zZ1yyyiicZ1yyzh56Z1yyzhofZ1yyyt0tZ1yyzhtgZ1yyzhg2Z1yyx4b4Z1yyx4b1Z1yyx39cZ1yyx41aZ1yyx4qeZ1yyx39eZ1yyzhiuZ1yyx41d
Most of the hits are 2n2222 variantes.
This one looks promising, dissipates over a Watt if you give it some copper:
? ??https://www.mouser.com/ProductDetail/Diodes-Incorporated/DXT2222A-13?qs=sGAEpiMZZMshyDBzk1%2fWi5S7e8F%2fC6%252bHGC8aVJqhk4k%3d
That Nexperion has a data sheet with both the SOT-23 and the TO-236, just says 250mW max, I'd guess the TO-236 can do more:
? ??
And if you want to try something that isn't 55 years old, there's this, dissipates over a Watt:
? ??
There's more, but the above show we could stick with 2n2222 and friends at $0.15 each in quantity.
All the cheap ones are surface mount, through-hole is now a weird specialty item.?
Perfect for hfsignals if they roll the board.
I'd bet we could use them in the existing through-hole positions, standing them up on their legs
and soldering some copper foil to the tab.? Though the through hole 2n2222a in the metal can would
make a lot more sense for re-working the old boards.
Jerry, KE7ER
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On Thu, Jun 7, 2018 at 11:38 am, Jerry Gaffke wrote:
What's absolutely astounding is that it's still a good choice.
The 2n2222a has slightly better specs than the original 2n2222, but not by much.
