EMRFD Message Archive 4523

Message Date From Subject
4523 2010-04-12 08:02:47 Paul What is a Mini Circuits T2-6T ?

I picked up a few T2-6T Mini Circuits trasnformers (for free) from a table at 4SQRP Ozarkcon this weekend.

They don't turn up in the part lookup at the Mini Circuits web site.

Trying to guess from similar part numbers I'm thinking it might be a 2:1 transformer where the "bottom" of the primary and secondary are connected (intended to be grounded), but I'm not sure.

It is a small black package less than 1 cm square, at least a few mm tall with leads coming straight out the sides near the bottom, 3 leads on each side.

I haven't done a continuity check of all the lead pairs yet, but I will tonight.

Any info (even an educated guess) would be appreciated.
4524 2010-04-12 08:29:43 Roelof Bakker Re: What is a Mini Circuits T2-6T ?
Hello Paul,

Your assumption that the impedance ratio is 1:2 is probably right.
The figure 6 indicates most likely a good low frequency response.

I have a few TT1-6 transformers, which have the - 3dB points at 4 kHz (!)
and 300 MHz.

I hope this helps a little.

Roelof, pa0rdt
4525 2010-04-13 04:27:31 drmail377 Re: What is a Mini Circuits T2-6T ?
Paul, Take a look at the T2.5-6T, this is likely a very similar part with a 2.5:1 impedance ratio while yours is a 2:1 ratio. The T2.5-6T data-sheet is on the MCL Web site. It seems that sometimes older (discontinued?) parts or one-of special order part numbers are not included
4526 2010-04-13 07:02:45 pgdaulton Re: What is a Mini Circuits T2-6T ?
I downloaded data sheet from Minicircuits web site, just google minicircuits T2-6t and it should take you there.

I have a bunch of T4-1 I pulled from surplus cable tv distribution boards( and mmics and sbl). These are great for bench model prototypes
saves a lot of time and my diminishing supply of torroids.

I was there too Gerry Edson WA0KNW gave a great talk
4527 2010-04-13 13:13:31 Paul Re: What is a Mini Circuits T2-6T ?

That is exactly what I did before posting.

When I google T2-6T I do get to the minicircuits transformer page with many similar part numbers, but not that one.

When I enter T2-6T into the minicircuits search box I get no match.

However, following hints from a few others (thanks Dave and Roelof) I can guess that it is most likely similar to a T2.5-6T (which is listed), except with a 2:1 instead of 2.5:1 impedance ratio.


4528 2010-04-13 13:35:54 Paul Re: What is a Mini Circuits T2-6T ?
> I was there too Gerry Edson WA0KNW gave a great talk on the sbl's.

Yes. I thought his practical tips on how to avoid pitfalls using MMIC amps were very good too.