The 2N3553 is a brutal 7 watt device in a TO-39 metal package. Chris
Trask, N7ZMY mentioned some unparalleled IM characterics
'... The BFQ19 (made by NXP née Philips) and the NE46134 (made by NEC)
are both highly popular within the CATV industry, and are virtually
identical in terms of linearity. They compare favourably to the 2N5109
in terms of linearity, though they pale in camparison with the 2N3553
(as do all the others)...'.
See
http://www.home.earthlink.net/~christrask/Bipolar%20Transistor%20Evaluation.pdf
2N3553 is often mentioned in transmitting applications but I was unable
to find some other details like IM, noise and gain characteristics in
high DR preamps for receiving purposes. Any experience?
73,
Martin, OK1RR
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