National LM337K 3-Terminal Adjustable Negative Regulator TO-3 unused

National and Motorola LM337K/883B 3-Terminal Adjustable Negative Regulator TO-3 NSNs 5962-99-726-3481 5962-99-724-9430 
Output Voltage Adjustable from -1.2V to -37V 1.5A Output Current, -55°C to +150°C
Line Regulation typically 0.01%/V Load Regulation typically 0.3%
Excellent Thermal Regulation, 0.002%/W
Unused untested date code :C140 and RQ8434 Price is for 1.
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