Variable Attenuator

B118200-7

(NSN) National Stock Number

5985-00-256-6391

Federal Supply Classification

5985 Antennas, Waveguides and Related Equipment

Item Name Code

00838

Schedule B Code

8529109000

Summary

Audio application design, cylindrical w/side terminals body style, 2.375 inches nominal overall length, 1.951 inches nominal overall width, 1.625 inches nominal body diameter, 0.250 inches nominal shaft diameter

DAC	HCC	DMIL	RNCC
X	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	XX

Identification

A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also resistor, vaiable (as modified).

INC	FIIG	Concept	Condition
00838	A223A0	-	1

Specifications

Application Design

audio

Details

The primary application for which the item is designed.

Body Style

cylindrical w/side terminals

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the body.

Overall Length

2.375 inches nominal

Details

The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

Overall Width

1.951 inches nominal

Details

An overall measurement taken at right angles to the length of an item,in distinction from thickness.

Body Diameter

1.625 inches nominal

Details

The length of a straight line which passes through the center of the body,and terminates at the circumference.

Shaft Diameter

0.250 inches nominal

Details

The length of a straight line which passes through the center of a shaft,and terminates at the circumference.

Bushing Length

0.406 inches nominal

Details

A measurement of the longest dimension of a bushing,in distinction from width.

Shaft Length

2.000 inches nominal

Details

A measurement of the longest dimension of the shaft,in distinction from width.

Body Length

1.875 inches nominal

Details

A measurement of the longest dimension of the body,in distinction from width.

Schematic Diagram Designator

bridged "t"

Details

A designator indicating a graphic representation,in standard and accepted symbols,of essential electrical-electronic elements and related connections on the item.

Power Rating

4.0 watts average

Details

The amount of electrical energy that can be dissipated.

Mounting Facility Screw Thread Series Designator

unef

Details

A designation distinguishing one group of screw thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter on the mounting facility.

Overall Attenuation Range In Decibels

+0.0 to 38.0

Details

The overall limits of decrease of the amplitude ratio of a signal between the input and output of the item,expressed in decibels.

Attenuation Variation Method

continuous

Details

The means by which the attenuation can be varied from the minimum to the maximum setting.

Mounting Facility Type And Quantity

1 threaded bushing

Details

Indicates the type and number of facilities by which the item is mounted.

Overall Attenuation Accuracy In Decibels

-1.90 to 1.90

Details

The overall limits of permissible variation in the attenuation accuracy from the nominal value at a specified frequency rating or range,expressed in decibels.

Mounting Thread Quantity

32 per inch

Details

The number of mounting threads on the item measured on a line parallel to the thread axis,including incomplete threads.

Adjustment Device Type And Quantity

1 shaft

Details

Indicates the type and number of facilities for adjusting the item.

Shaft Type

round

Details

Indicates the type of shaft included on the item.

Mounting Facility Nominal Screw Thread Diameter

0.375 inches

Details

The nominal length of a straight line which passes through the center of a coaxial cylinder which would bound the crest of an external thread or the root of an internal thread.

Impedance Rating In Ohms

500.0 input-output

Details

The total opposition (resistive and reactive) to the flow of alternating current,expressed in ohms.

Terminal Type And Quantity

6 tab, solder lug

Details

Indicates the type and number of terminals for providing electrical connection.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
T500L	37942	X	-	3	1	-	XX

Material and Special Handling

Hazardous material, precious metals, criticality, and electrostatic discharge indicators.

HMIC	PMIC	ESD/EMI	Criticality
P	U	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
34580	-	W	-

RVC	WCC	TCC	SHC
-	658	Z	9

What's Included?

Certificate of Conformity
QC Inspection prior to shipping
On time delivery
Friendly service to back every order

Manufacturer

MALLORY SONALERT PRODUCTS, INC.

CAGE: 90201

INDIANAPOLIS , IN , 46241-6404

UNITED STATES

View Products

FAQs

Frequently asked questions for NSN 5985-00-256-6391

What is the NIIN of the NSN 5985-00-256-6391?

The National Item Identification Number (NIIN) of the NSN 5985-00-256-6391 is 00-256-6391

When the NSN 5985-00-256-6391 was assigned to the Federal Catalog?

It was assigned 62 years ago, on Tue, Jan 1, 1963

Does the NSN 5985-00-256-6391 contain any precious metals?

Type/content is unknown

Does the NSN 5985-00-256-6391 contain any hazardous material?

No information in HMIRS

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