EMRFD Message Archive 6828

Message Date From Subject
6828 2011-11-15 09:27:05 Alberto I2PHD Unknown component
I found in my junk box a couple of these components, which look like mini-opamps
or something similar. Google was of no help to find the datasheet.
Can please somebody enlighten me ?



/*73 Alberto I2PHD*/

[Non-text portions of this message have been removed]
6829 2011-11-15 09:37:34 NeilDouglas Re: Unknown component

They are Mini Circuits mixers from the SYM range. I think the H on the end
of the part number means Lo Power +17dBm.





6830 2011-11-15 13:46:14 Alberto I2PHD Re: Unknown component
6831 2011-11-15 16:20:24 NeilDouglas Re: Unknown component

The Mini Circuits mixers used in my own equipment are definitely marked with
MCL as the manufacturer code.

The 0947 is probably a manufacture date / batch code
Mini Circuts make custom or selected parts for some customers; these are
probably one of these parts.

As the part number has no + suffix, these are probably pre RoHS and you
might need to find an old catalog.


-----Original Message-----
6832 2011-11-15 20:34:04 Kerry Re: Unknown component
I agree that they are MiniCircuits mixers and are probably a "special"; I looked in a 1996 catalogue and a 2007 catalogue and found several SYM-xx but couldn't find a "1990".

The "H" is used for any mixer over +7dBm, eg Level 10, 13, 17 etc.

There seems to be a tendency for the "xxxx" to indicate either an upper frequency range (eg SMY-2500 has a 2500 MHz upper limit) or the approximate centre of a narrower range (eg SMY-860 has a range roughly centred around 860 MHz); this may be a clue to the "1990" but, then again, it may not as not all the mixers follow this "rule". :)

Use them in non-critical applications if you can't test them.

6833 2011-11-16 04:07:42 Alberto I2PHD Re: Unknown component