ZTX450 & ZTX550 SMD equivalents?

[Doomguy42]

Hi,

Are there any goto SMD equivalents for the trusty old ZTX450 and ZTX550?

I've been running comparisons but I'm not sure on the differences in values changes.

+greater max voltage? (45v or higher?)
+amp rating (do I need +1A or higher?)
Power disapation all seem lower in SMD packages?
Hfe I'm not sure what I can change.

I'm working on a remake old arcade style board as a project so these are mostly logic, reset, some other stuff like -12v.

I could use the original TH ZTX transistors but it would be nice to use more modern and cheaper components.

Thanks

 

[ronsimpson]

BCP51-16,115
FCX491ATA
FMMT619TA
FMMT720TA
BCP54-16,115

 

[Doomguy42]

Thanks