WG6100 Q905 replacement

komodo

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I've been digging around for other suitable replacements for this transistor and was wondering if some of the electronics gurus here can check my work?

Q905 as installed in the WG6100 HV cage is a 2N6557. That part is hard to come by except from Bob at $5 a pop. Instead of spending a lot to get a stash of these on hand, I was shopping around. I have seen the MJE340 listed but the form factor is different and the legs have to be twisted to get the correct pinning. MPSU10 is also listed as a sub but they are a bit expensive at anywhere from 3-$10 each. In addition, the form factor is slightly different (although the correct pinout) unless you buy the heavy duty CEN version in the TO-202 package and I think that is a 500 piece minimum.

I found the Phillips BF858A or BF859A as a possible substitute and was wondering if you smarties could take a look at it for me and tell me if you think it would work.

Pat
 
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