[time-nuts] Minicircuits 10% discount in December
jgray at zianet.com
Thu Nov 27 17:21:13 EST 2014
Mouser carries a selection from Fair-Rite. They don't make it easy to
find a specific part number, however.
On Thu, Nov 27, 2014 at 11:34 AM, Tim Shoppa <tshoppa at gmail.com> wrote:
> Again I refer you to Clifton Labs website and cross-references there to the
> Fair-Rite part numbers/mixes. Although the marketing largely emphasizes EMI
> suppression, all the mainline distributors now offer several mixes and core
> styles that are perfect for RF transformers.
> Powdered iron, yeah, those are not so easily found at mainline
> distributors, I end up getting them from kitsandparts.com or Amidon.
> And to Jim's point... "build your own" MMIC from discrete RF transistors
> (often different generations of CATV-oriented transistors - you get the
> advantage that you get tune bias currents etc. for individual need) is
> quite easy using parts stocked at Mouser etc. They also have these
> impressive super-beefy broadband CATV distribution/isolation amplifiers.
> Tim N3QE
> On Thu, Nov 27, 2014 at 12:49 PM, Bob Camp <kb8tq at n1k.org> wrote:
>> At least last time I looked, the "easy to find" distributors had great
>> selections of parts used for switching power supplies and EMI suppression.
>> When you started to dig for the specialized parts for RF transformers and
>> tuned filters, the stock was pretty thin to nonexistent. If you move from
>> ferrite to powdered iron, the search process alway has been more
>> > On Nov 27, 2014, at 11:09 AM, Tim Shoppa <tshoppa at gmail.com> wrote:
>> > On Thu, Nov 27, 2014 at 10:28 AM, Bob Camp <kb8tq at n1k.org> wrote:
>> >> The main complaint is the difficulty of getting the correct cores. I
>> >> to have a few dozen bags of cores.
>> > The mainline distributors (Allied, Newark, Mouser, etc.) have excellent
>> > selection of Fair-Rite and other cores. Admittedly to a neophyte the
>> > equivalence of Fair-Rite or Laird part numbers to an Amidon-style number
>> > may not be evident.
>> > Clifton labs has excellent webpages of examples and is also a good way to
>> > find the cores sizes and materials commonly stocked at the mainline
>> > distributors using the manufacturer's part number (often with cross-ref
>> > Amidon style number as a strong hint!)
>> > Recently some here expressed concern that the mini-circuits part may
>> > saturate with medium DC currents. Of course if you are doing a SMT
>> > production run you don't want to use bigger cores than necessary and most
>> > of the mini-circuits parts tend to be physically very tiny to meet this
>> > market. But if you wind your own on bigger cores this is a non-issue.
>> > Tim N3QE
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