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 ? TIA http://www.sdradio.eu/images/mcl.jpg -- /*73 Alberto I2PHD*/ [Non-text portions of this message have been removed]
6829	2011-11-15 09:37:34	NeilDouglas	Re: Unknown component
Alberto, They are Mini Circuits mixers from the SYM range. I think the H on the end of the part number means Lo Power +17dBm. Regards NeilD G4SHJ _____
6830	2011-11-15 13:46:14	Alberto I2PHD	Re: Unknown component
6831	2011-11-15 16:20:24	NeilDouglas	Re: Unknown component
Alberto, 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. NeilD -----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. Kerry.
6833	2011-11-16 04:07:42	Alberto I2PHD	Re: Unknown component