5905-01-216-3981, RESISTOR,VARIABLE,HYBRID

5905-01-216-3980 RESISTOR,VARIABLE,NONWIRE WOUND,

National Stock Number:
5905-01-216-3981

Federal Supply Class:
5905

National Item Identification Number:
012163981

Description:
RESISTOR,VARIABLE,HYBRID

Detail:
A RESISTOR IN WHICH A SLIDING OR ROLLING CONTACT MOVES OVER AN EXPOSED AREA OF THE RESISTIVE ELEMENT. UNIFORM CONTACT PRESSURE ON THE RESISTANCE ELEMENT IS MAINTAINED BY POSITIVE PRESSURE TO PERMIT SMOOTH ELECTRICAL AND MECHANICAL CONTROL OF THE RESISTOR OVER THE ENTIRE RESISTANCE RANGE. THE RESISTIVE ELEMENT IS CONSTRUCTED OF A COMBINATION OF TWO MATERIALS USUALLY CONSISTING OF A WIREWOUND ELEMENT WITH A COATING OF CONDUCTIVE PLASTIC APPLIED OVER THE RESISTANCE WIRE WHERE THE SLIDER MAKES CONTACT. MAY BE CONSTRUCTED OF A SINGLE OR MULTITURNS OF WIRE SUPPORTED ON AN INSULATING STRUCTURE ON WHICH THE WIPER CONTACTS THE COATED WIRE CONTINUOUSLY IN THE DIRECTION OF WIPER TRAVEL. THE OPPOSITION TO THE FLOW OF CURRENT IS AN INHERENT PROPERTY OF THE WIRE USED AND IS MANIFESTED IN THE HEAT DISSIPATED IN THE RESISTOR ITSELF. FOR ITEMS HAVING MANUALLY POSITIONED TAPS DESIGNED TO BE SET AND FIXED PRIOR TO USE, SEE RESISTOR, ADJUSTABLE. FOR ITEMS WITH STEP BY STEP VARIATION, SEE RHEOSTAT; AND RESISTOR, STEP BY STEP. FOR TANDEM-MOUNTED ITEMS DESIGNED TO FUNCTION TOGETHER AS AN ATTENUATOR (AND RATED ACCORDINGLY), SEE ATTENUATOR, VARIABLE. EXCLUDES OTHER RESISTOR (1), VARIABLE, (AS MODIFIED).

Manufacturer Information:

25885-031A	09553	MARCONI ELECTRONICS INC MARCONI INSTRUMENTS DIV
25885-031A	51190	VIAVI SOLUTIONSLLC
25885/031	51190	VIAVI SOLUTIONSLLC
8136R100KL.25	73138	BI TECHNOLOGIES CORPORATION

Techincal Specification:

SECTION QUANTITY	1
ELECTRICAL RESISTANCE PER SECTION	100.0 KILOHMS SINGLE SECTION
RESISTANCE TOLERANCE PER SECTION IN PERCENT	-10.0 TO 10.0 SINGLE SECTION
FUNCTION CONFORMITY PER SECTION	SINGLE SECTION INDEPENDENT LINEARITY
FUNCTION CHARACTERISTIC PER SECTION	SINGLE SECTION LINEAR
FUNCTION CONFORMITY TOLERANCE PER SECTION	-0.25 TO 0.25 SINGLE SECTION
SHAFT BEARING TYPE	SLEEVE
SHAFT END PLAY	0.010 INCHES
MAXIMUM STOP TORQUE	48.00 INCH-OUNCES
MAXIMUM STARTING TORQUE	1.50 INCH-OUNCES
MAXIMUM RUNNING TORQUE	1.50 INCH-OUNCES
TEMP COEFFICIENT OF RESISTANCE PER SECTION IN PPM PER DEG CELSIUS	-150.0 TO 100.0 SINGLE SECTION
POWER DISSIPATION RATING PER SECTION IN WATTS	2.0 FREE AIR SINGLE SECTION
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER	25.0 SINGLE SECTION
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER	105.0 SINGLE SECTION
BODY STYLE	CYLINDRICAL BUSHING MOUNTED
BODY DIAMETER	0.750 INCHES NOMINAL
BODY LENGTH	0.875 INCHES NOMINAL
MOUNTING BUSHING LENGTH	0.312 INCHES NOMINAL
ACTUATOR TYPE	SINGLE SHAFT
SHAFT STYLE	ROUND
SHAFT DIAMETER	0.249 INCHES NOMINAL
SHAFT LENGTH	0.812 INCHES NOMINAL
ROTARY ACTUATOR TRAVEL IN ANGULAR DEG	3600.0 NOMINAL
ACTUATOR TRAVEL CONTROL FEATURE	STOPS
EFFECTIVE ELECTRICAL ROTATION IN DEG ANGULAR ROTATION	3600.0 NOMINAL
NONTURN DEVICE LOCATION	AT 12 OCLOCK
NONTURN DEVICE RADIUS	0.290 INCHES NOMINAL
MOUNTING METHOD	STANDARD BUSHING
SCREW THREAD SERIES DESIGNATOR	UNEF
SCREW THREAD DIAMETER	0.375 INCHES NOMINAL
SCREW THREAD QUANTITY PER INCH	32.0
TERMINAL TYPE AND QUANTITY	3 TAB, SOLDER LUG
TERMINAL LOCATION	RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE
RELIABILITY INDICATOR	NOT ESTABLISHED
CUBIC MEASURE	0.052 CUBIC INCHES
FRAGILITY FACTOR	MODERATELY RUGGED

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