Does anyone know a good, hopefully low cost, source for the precision resistors required for the LTZ1000A circuit as shown in the LTZ1000A data sheet.  I found the 1K and 120 ohm .01% resistors on Mouser but no source found for the 13K and 70K .01% resistors.  Vishay is quite expensive but i haven't contacted them directly. Thanks, Randy Evans

Hello Randy, another source could be the UPW50 or UPW25 series of wire wound resistors. Some values are available at RS-Components. the 70K = 50K + 20K the 12,5K = 10K + 2K + 500R (50 degrees setpoint temperature) another possibility is the trimming service of DigiKey for VSMP resistors. http://www.digikey.de/product-search/de/resistors/precision-trimmed-resistors/66806?k=vishay%20metal%20foil You can get every value within 4 ohms - 120K. the only disadvantage is that there is only little mechanical decoupling against PCB stress of SMD devices. With best regards Andreas Am 10.12.2013 04:01, schrieb Randy Evans: > Does anyone know a good, hopefully low cost, source for the precision resistors required for the LTZ1000A circuit as shown in the LTZ1000A data sheet. I found the 1K and 120 ohm .01% resistors on Mouser but no source found for the 13K and 70K .01% resistors. Vishay is quite expensive but i haven't contacted them directly. > > Thanks, > > Randy Evans > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there.