EMRFD Message Archive 5988

Message Date From Subject
5988 2011-04-01 13:47:19 Mike Short Motorola SRF2857 power transistors
Can anyone tell me about these? I acquired 6 of these, and can't find
any info.

I also have a whole parts bin full of crystals. 15MHz, 33, 45, 146, 155
465 ranges,
Any interest?