National Semiconductor LM320K-12 Regulator Milspec Gold Plated OM0143

Description

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For sale here we have the above part…

3-Terminal Negative Voltage Regulator by National Semiconductor

Gold Plated TO3 ‘Milspec’ Package

Power rated dissipation:  20W

Package/Case:	TO3
Number of Outputs:	1 Output
Polarity:	Negative
Output Voltage:	– 12 V
Output Current:	1.5 A
Output Type:	Fixed
Input Voltage MIN:	– 35 V
Minimum Operating Temperature:	0 C
Maximum Operating Temperature:	+ 125 C

General Description

The LM320 series are three-terminal negative regulators with a fixed output voltage of −12V, and up to 1.5A load current capability. They need only one external component – a compensation capacitor at the output, making them easy to apply. Worst case guarantees on output voltage deviation due to any combination of line, load or temperature variation assure satisfactory system operation. Exceptional effort has been made to make them immune to overload conditions. The regulators have current limiting which is independent of temperature, combined with thermal overload protection. Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during pro-longed overloads. Although primarily intended for fixed output voltage applications, they may be programmed for higher output voltages with a simple resistive divider. The low quiescent drain current of the devices allows this technique to be used with good regulation.

Features

■Pre-set output voltage error less than ±3%

■Pre-set current limit

■Internal thermal shutdown

■Operates with input-output voltage differential down to 1V

■Excellent ripple rejection

■Low temperature drift

■Easily adjustable to higher output voltage

Date coded 644 we believe them to have been manufactured circa 86′ 

For full datasheet on the LM320K-12 copy and paste:-  http://pdf1.alldatasheet.com/datasheet-pdf/view/8620/NSC/LM320K-12.html

These parts came to us as part of a lot of surplus stock from a large Milspec type Co. and have been kept in storage for some time, we have therefore classified them as ‘new other’. They are however in pristine condition still in their original packaging and ‘as new’ in all respects, the photographs are representative of their excellent condition, and, as with all our products they come with a full guarantee. 

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