RA20NBSD502A

RA20NBSD502A Non Wire Wound Variable Resistor

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Datasheet. RA20NBSD502A specification

Section Quantity
The number of individual elements.

1

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

cylindrical bushing mounted

Reliability Indicator
An indication that the level of probability that an item will operate without failure,at a specified rated capability,at a specified temperature,and for a specified period of time,has been established by testing random samples of production lot.

not established

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

2.065in. ⁓2-5/64"

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

1.100in. and 1.310in.

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

0.248in. and 0.251in.

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

0.875in.

Mounting Bushing Length

0.375in.

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

0.620in.

Overall Diameter
A measurement of the longest straight line across a circular cross-sectional plane.

1.750in. ⁓1-3/4"

Shaft Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft.

round, slotted

Switch Type
Indicates the type of switch included in the item.

rotary

Switch Voltage Rating In Volts
The voltage for which the switch is rated for normal operation,expressed in volts.

117.0

Contact Arm Electrical Off Position
The location of the contact arm when there is no electrical continuity between the moving contact and the resistive element.

fully ccw

Actuator Type
Indicates the type of facility or arrangement provided for moving the variable contact(s).

single shaft

Effective Electrical Rotation In Deg Angular Rotation
That part of the total rotational travel of the actuator that produces a change in output,expressed in degree angular rotation.

220.0 and 285.0

Maximum Starting Torque
The maximum amount of turning force required to initiate the actuator movement.

6.00 INCH-Ounces

Maximum Running Torque
The maximum amount of force requred to maintain actuator movement.

1.20 INCH-Ounces

Maximum Stop Torque
The maximum amount of turning force that can be applied through the operating shaft with0ut damage to the stops.

128.00 INCH-Ounces

Nonturn Device Location
Indicates the location of a mechanical device which prevents the turning of the item on its mounted surface,expressed by the twelve hour clock designation.

at 9 oclock

Nonturn Device Radius
The linear measurement of the distance from the actuator centerline to the centerline of the nonturn device.

0.531in.

Switch Operating Position
The definitive positional point at which the switch operates /starting with the actuator in extreme counterclockwise position and moving clockwise for rotary actuated resistors;starting with actuator full retracted /pushed in/ for longitudinally actuated resistors/.

start of rotation

Switch Contact Arrangement
A designation that describes the basic electrical configuration of a switch.

single pole, single throw, normally open, both positions maintained

Screw Thread Diameter
The 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.

0.375in.

Screw Thread Series Designator
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.

unef

Screw Thread Quantity Per Inch
The number of screw threads on the item per linear inch measured on a line parallel to the thread axis,including incomplete threads.

32.0

Terminal Location
The position of the terminal/s/ for making connection to an item.

REAR-Bottom

Mounting Method
The means of attaching the item.

standard bushing

Features Provided
Those features,not otherwise specified,which may be required for proper functioning of the item.

switch

Electrical Resistance Per Section
A measure of the opposition to the flow of direct or alternating current per section.

5.0 kilohms single section

Rotary Actuator Travel In Angular Deg
The measurement of the rotary mechanical motion of the actuating shaft of an item,expressed in degrees.

290.0 and 305.0

Ambient Temp In Deg Celsius Per Section At Zero Percent Rated Power
The ambient temperature at which the power dissipation of each section is derated to zero percent of the full rated power.

105.0 single section

Power Dissipation Rating Per Section In Watts
The maximum amount of electrical energy that can be expended per section,expressed in watts.

2.0 free air single section

Resistance Tolerance Per Section In Percent
The limits of permissible variation in the electrical resistance value per section of an item from its rated value,expressed in percent.

-10.0/+10.0 single section

Actuator Travel Control Feature
The feature that controls the actuator travel.

stops

Ambient Temp In Deg Celsius Per Section At Full Rated Power
The ambient temperature,expressed in degrees celsius,of the medium surrounding each section at which it can be operated continuously at full rated power.

40.0 single section

Switch Current Type And Rating In Amps
Indicates the type of electrical current and the capacity for normal operation of the switch,expressed in amperes.

3.000 ac

Standard Taper Curve Per Section
The rate of change and distribution of resistance per section,in relation to the rotation of the control shaft,which establishes a standard taper curve designated by an alphabetic character and accepted for common usage.

a single section

Test Data Document
The specification,standard,drawing,or similar instrument that specifies environmental and performance requirements or test conditions under which an item is tested and establishes acceptable limits within which the item must conform identified by an alphabetic and/or numeric reference number. includes the commercial and government entity (cage) code of the entity controlling the instrument.

81349-MIL-R-19 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.) .

Terminal Type And Quantity
Indicates the type and number of terminals for providing electrical connection.

5 tab, solder lug

Specification/standard Data
The document designator of the specification or standard which established the item of supply.

81349-MIL-R-19/2 government specification

Answers.

What quantity is this sold in?

1EA

What is the NSN for RA20NBSD502A?

5905-00-098-8536

How is this classified for shipping?

Schedule B number: 8533390080
nmfc 062960
Wirewound variable resistors

What's the federal classification of RA20NBSD502A?

FSC 5905 ⁓ Resistors

Excluding resistance wire.

NSN 5905-00-098-8536 RESISTOR,VARIABLE,WIRE WOUND,NON

2.065" overall length

NIIN
000988536
NIIN Date
12/13/72
Schedule B
8533390080 
Name Code
37406
FIIG
A002A0
Item Weight
0.200lbs
Item Dimensions
--
QUP
Historical Price
$504.83 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
Has ESD sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. MILR19-2 Cage 81349

Major End Users Countries and entities

  • - Department of The Navy 
  • - Department of The Army 
  • - Department of The Air Force 
  • - Spain 
  • - Singapore 
  • - Canada 
  • - Republic of Korea 
  • - Italy 
  • - Greece 
  • - Turkey 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
77.5 
LCL (less than a car load rating)
Unknown
Special Cargo
Electrostatic sensitive device (esd) 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps) 
Commodity (for shipments via water)
Instruments, electric meter 
NMFC (national motor freight code)
062960 REOSTATS/PARTS NOI 
UFC (universal freight code)
35140 

Similar by Design Other resistors with similar characteristics

Nothing similar to this part number was found in our inventory

RA20NBSD502A / Resistor,variable,wire wound,nonWhat is the formal definition of this item?

A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. the functional tolerance (linearity), if given, of the output is greater than plus of minus 1 percent on linear outputs. specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. 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 resistor (1), variable, nonwire wound, nonprecision; resistor (1), variable, nonwire wound, precision; and resistor (1), variable, wire wound, precision.