LM399: Difference between revisions
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| Line 4: | Line 4: | ||
|Part_nos= | |Part_nos= | ||
|Description=Heated zener reference | |Description=Heated zener reference | ||
|Used_in=DM5120;DM5520; | |Used_in=DM5120;DM5520;Keithley 181; | ||
}} in a 4-lead TO-46 metal can. | }} in a 4-lead TO-46 metal can. | ||
Revision as of 06:13, 21 May 2024
The National Semiconductor LM399 is a Heated zener reference monolithic integrated circuit in a 4-lead TO-46 metal can.
Used in
Some instruments using part LM399
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| DM5120 | Tektronix | Plug-in | DM5120 | programmable 6½-digit multimeter | 1989 |
| Keithley 181 | Keithley | Multimeter | 181 | 5½-digit nanovoltmeter | (?) |
| Keithley 193A | Keithley | Multimeter | 193A | 6½-digit system multimeter | 1985 |
| Keithley 196 | Keithley | Multimeter | 196 | 6½-digit system multimeter | 1986 |