L21040

L21040 Pre Wire Wound Variable Resistor

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Datasheet. L21040 specification

Section Quantity
The number of individual elements.

1

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

2.000in.

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

0.219in.

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

0.250in.

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

2.156in. ⁓2-5/32"

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

round

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.

320.0

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

1.50 INCH-Ounces

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

1.00 INCH-Ounces

Mounting Method
The means of attaching the item.

clamp ring

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

2.500 kilohms single section

Function Conformity Tolerance Per Section
The permissible range per section by which the actual value of resistance or voltage at any specified point may deviate from the theoretical value for the linear or nonlinear function,expressed as a minus and plus percent.

-0.03/+0.03 single section

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

4.0 free air single section

Function Conformity Per Section
The fidelity of the relationship between the actual function characteristics and the theoretical function per section.

single section independent linearity

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.

-1.0/+1.0 single section

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.

25.0 single section

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

6 solder stud

Answers.

What is the overall width?

2.000 inches

What is the NSN for L21040?

5905-00-539-0066

How is this classified for shipping?

Schedule B number: 8533390080
nmfc 062960
Wirewound variable resistors

What's the federal classification of L21040?

FSC 5905 ⁓ Resistors

Excluding resistance wire.

NSN 5905-00-539-0066 RESISTOR,VARIABLE,WIRE WOUND,PRE

2.000" overall width

NIIN
005390066
NIIN Date
01/01/63
Schedule B
8533390080 
Name Code
37408
FIIG
A002A0
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
No ESD or EMI sensitivity

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

1. R19-252X Cage 1PQF4
2. RVC2-252F0030LNNR007 Cage 99957
3. R19-252X Cage 36378

Major End Users Countries and entities

  • - Greece 

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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)
77.5
Special Cargo
No special type of cargo code applicable 
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)
Electrical appliances, small 
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

L21040 / Resistor,variable,wire wound,preWhat 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) of the output is equal to or less than plus or munus 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, nonprecision.