Hi A lot of the OEM’s seem to be going with a large multi layer PCB as the “heatsink” for the lightweight Rb’s. Apparently they have enough airflow through their racks that this works ok for them. In that case, I think I’d prefer some sort of “cheap” SMD PC mount connector. Faster to assemble that way …..those nickels add up quick :)
Bob > On Aug 21, 2017, at 10:56 AM, Mark Sims <hol...@hotmail.com> wrote: > > I'm going to buy enough boards to get them for a decent price... way lower > than you can have them built for. Will also probably do them with a kit of > parts. > > RDR Electronics has SA22's for not much more than the X72. The problem with > SA22's is the connector. It is a dual row 18 pin connector with 2mm pitch. > It is on the bottom of the box where you want to mount the heatsink. Not > sure how one would mount it so that the full surface is on the heatsink. It > looks like they use a mating SMD PCB mounted connector. > > --------------------- > >> So if he had finished his board I would be happy to > get the sources to get some ordered at my local PCB manufacturer. > I think that brings the best options for future use of the X72 > oscillator which seems to be a very good small rubidium oscillator > nowerdays. SA22.c oscillators are not so spread over the known used-item > reseller sources and if yes they are quite expensive to buy. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
