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Datasheet. CM8739 specification
Section Quantity
The number of individual elements.
The number of individual elements.
2
Body Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
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.
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.
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
3.125in. ⁓3-1/8"
First Flat Length
0.438in.
Flat Height
0.218in.
Body Diameter
The length of a straight line which passes through the center of the body,and terminates at the circumference.
The length of a straight line which passes through the center of the body,and terminates at the circumference.
1.625 in.
Shaft Diameter
The length of a straight line which passes through the center of a shaft,and terminates at the circumference.
The length of a straight line which passes through the center of a shaft,and terminates at the circumference.
0.250in.
Shaft Length
A measurement of the longest dimension of the shaft,in distinction from width.
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.
A measurement of the longest dimension of the body,in distinction from width.
2.250in.
Overall Diameter
A measurement of the longest straight line across a circular cross-sectional plane.
A measurement of the longest straight line across a circular cross-sectional plane.
2.588in. ⁓2-19/32"
Shaft Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft.
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft.
round, flatted
Switch Type
Indicates the type of switch included in the item.
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.
The voltage for which the switch is rated for normal operation,expressed in volts.
125.0
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.
The location of the contact arm when there is no electrical continuity between the moving contact and the resistive element.
fully cw
Actuator Type
Indicates the type of facility or arrangement provided for moving the variable contact(s).
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.
That part of the total rotational travel of the actuator that produces a change in output,expressed in degree angular rotation.
300.0
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.
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 12 oclock
Nonturn Device Radius
The linear measurement of the distance from the actuator centerline to the centerline of the nonturn device.
The linear measurement of the distance from the actuator centerline to the centerline of the nonturn device.
0.500in.
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/.
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.
A designation that describes the basic electrical configuration of a switch.
single pole, single throw, normally open, both positions maintained
Fragility Factor
The measure of sensitivity of the item to be packaged. a factor used by packaging engineers in devising proper cushioning in a package.
The measure of sensitivity of the item to be packaged. a factor used by packaging engineers in devising proper cushioning in a package.
moderately rugged
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.
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.
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.
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.
The position of the terminal/s/ for making connection to an item.
REAR-Bottom
Mounting Method
The means of attaching the item.
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.
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.
A measure of the opposition to the flow of direct or alternating current per section.
35.000 ohms c and better
Rotary Actuator Travel In Angular Deg
The measurement of the rotary mechanical motion of the actuating shaft of an item,expressed in degrees.
The measurement of the rotary mechanical motion of the actuating shaft of an item,expressed in degrees.
300.0
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.
The ambient temperature at which the power dissipation of each section is derated to zero percent of the full rated power.
105.0 all sections
Temp Coefficient Of Resistance Per Section In Ppm Per Deg Celsius
A constant that represents the proportionate change in resistance caused by a change in temperature per section,expressed in parts per million per degree celsius.
A constant that represents the proportionate change in resistance caused by a change in temperature per section,expressed in parts per million per degree celsius.
-50.0/+50.0 all sections
Power Dissipation Rating Per Section In Watts
The maximum amount of electrical energy that can be expended per section,expressed in watts.
The maximum amount of electrical energy that can be expended per section,expressed in watts.
25.0 7th secondary at 10'30 oclock
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.
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 all sections
Actuator Travel Control Feature
The feature that controls the actuator travel.
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.
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 all sections
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.
Indicates the type of electrical current and the capacity for normal operation of the switch,expressed in amperes.
5.000 ac/dc
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.
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 all sections
Terminal Type And Quantity
Indicates the type and number of terminals for providing electrical connection.
Indicates the type and number of terminals for providing electrical connection.
8 tab, solder lug
Answers.
What quantity is this sold in?
1EA
How is this classified for shipping?
Schedule B number: 8533390080
nmfc 062960
Wirewound variable resistors
What's the federal classification of CM8739?
FSC 5905 ⁓ Resistors
Excluding resistance wire.
NSN 5905-00-642-1170 RESISTOR,VARIABLE,WIRE WOUND,NON
3.125" overall length
- NIIN
- 006421170
- NIIN Date
- 01/01/63
- Schedule B
- 8533390080
- Name Code
- 37406
- FIIG
- A002A0
- Item Weight
- 0.000lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $14.65 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
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - Italy
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- 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
- 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
CM8739 / 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.
