Free Semiconductors from
18 August 2016
Bob, KE6F, has a huge junk box that is is willing and pleased to
share with other experimenters. Here are the items that
Bob presently offers:
BF998 Dual Gate MOSFETs. These are real
gems. They are SMT parts with four
terminals. They are easy to use in a breadboard
and provide lots of gain and low noise up through
VHF. A 50 MHz low noise amplifier is shown by clicking
here. To get a "pinch" of
these parts, send a regular sized (business) SASE with a
"Forever" stamp to Bob and he will send you the
the BF998 is not an obscure dual gate part from the
past. Rather, it is an active
component that is still listed in the Digi-Key and the
Mouser catalogs of August, 2016.
If you use these in, for example, a club project,
there is a good chance that they will still be around
for a while.
TO-220 Power MOSFETs. The types are the BUZ101
and the BUZ104 from Siemens/Infineon. These are new leaded
parts. The specs look like these would work well for RF
power amplifiers in the low end of the HF spectrum.
If you want some of these parts, send a LARGE (8.5 x 11 inch) SASE
to Bob with a couple of
dollars of postage. Don't send
money. With the SASE Bob will send you "a fist full"
of the parts in foil wrap.
The above SASE conditions apply to experimenters
in the USA. If you are elsewhere, please
contact Bob for details.
The data sheet for the
BUZ104L lists the part as 50 V max drain voltage, 17.5 A max
current, 0.1 Ohm max Rds-on, 60 Watt dissipation, and
typical gate-source threshold of 1.6 volt.
The address for the parts is
Bob Miller, KE6F
9239 Knights Lane
Wilton, CA 95693
Bob's email is firstname.lastname@example.org
Many thanks Bob for your