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|Manufacturer=National Semiconductor | |Manufacturer=National Semiconductor | ||
|Model=LM399 | |Model=LM399 | ||
|Part_nos= | |Part_nos=156-0783-00 | ||
|Description=heated zener reference | |Description=heated zener reference | ||
|Used_in=DM5120;DM5520;Keithley 181;Keithley 191;Keithley 192;Keithley 193A;Keithley 196; | |Used_in=DM5120;DM5520;Keithley 181;Keithley 191;Keithley 192;Keithley 193A;Keithley 196;1410;1411;1412; | ||
}} in a 4-lead TO-46 metal can. | }} in a 4-lead TO-46 metal can. | ||