Possibly, but I don't know about power dissipation (the PZT has a heatsinking tab, and we run a fair bit of current through it. And, that would be a hand-sokdering job that would run up the assembly cost.
We do have a source of the part, but we are stuck with the month or so delay. On Jun 25, 2018, 4:57 PM, at 4:57 PM, Dana Whitlow <[email protected]> wrote: >John, > >Couldn't the TO-92 part (2N3904) be soldered down instead (if one has >steady hands), >and work about as well? > >Dana > > >On Mon, Jun 25, 2018 at 11:58 AM, John Ackermann N8UR <[email protected]> >wrote: > >> To those who pre-ordered TNS-BUF boards: >> >> We've had a delay due to parts availability -- a common transistor >> (PZT3904) is apparently on worldwide back order with lead times >quoted of >> up to a year. Our contract manufacturer has finally found a source, >but >> they will not be delivered until mid-August. That means that TAPR >won't >> receive the boards until the second half of September. >> >> If the delay causes you a problem and you'd like to cancel your >order, >> please contact the TAPR office ([email protected]) and John will >take >> care of that (though he will be out of town until July 6). >> >> Sorry for the inconvenience, but we did not want to risk using a >> substitute component that might change the performance of the unit. >> >> John >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://lists.febo.com/cgi-bin >> /mailman/listinfo/time-nuts >> and follow the instructions there. >> >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to >https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
