Resistor
Federal Supply Class (FSC): 5905
NATO Supply Classification Class (NSC): 5905
Group Description: Electrical and Electronic Equipment Components
Federal Supply Group (FSG): 59
NATO Supply Classification Group (NSG): 59
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Includes Varistors; Resistive ballast Tubes; Rheostats; Resistor Networks; Resistor Mounting Hardware; Thermistors./
Excludes Resistance Wire./
Note-Mounting hardware, included in classes of this group, includes such specially designed items as brackets, holders, retainers, etc. Excluded from classes in this group are such hardware items as screws (Class 5305), bolts (Class 5306), studs (Class 5307), washers (Class 5310), rivets (Class 5320), and other common items indexed to specific classes, other than in Group 59. The FSC indexes and structure will govern the classification of items used on or with mounting hardware cited above.
Frequently Asked Questions (FAQ) for Federal Supply Class 5905
- What is Federal Supply Class 5905?
- FSC 5905 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5905) in the USA for supply items codified in the category of Resistor.
- What is NATO Supply Classification Class 5905?
- NSC 5905 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5905 in the USA) for supply items codified in the category of Resistor.
- Which Federal Supply Group is FSC 5905 in?
- FSC 5905 is in Federal Supply Group (FSG) 59 which contains .
- Which NATO Supply Classification Group is NSC 5905 in?
- NSC 5905 is in NATO Supply Classification Group (NSG) 59 which contains .
Supply Items Included in Federal Supply Class 5905
- What is an Adjustable Resistor? 4489 Items
- An Adjustable Resistor (RESISTOR,ADJUSTABLE) is a resistor whose overall ohmic value is fixed; in addition, it has one or more movable terminals which are designed to be set and fixed prior to use, to include any desired value of resistance within the range of the complete resistor. The opposition to the flow of current is an inherent property of the material used and is manifest in the heat dissipated in the item itself.
- What is a Wire Wound Fixed Resistor? 41338 Items
- A Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self supporting. Opposition to the flow of current is an inherent property of the resistance wire and is manifest by the heat dissipation in the resistor. Excludes SUPPRESSOR, IGNITION INTERFERENCE.
- What is a Composition Fixed Resistor? 18242 Items
- A Composition Fixed Resistor (RESISTOR,FIXED,COMPOSITION) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of a mixture of carbon, an insulating material, and suitable binders, either molded together or applied as a thin layer of conducting material on an insulated form. The opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the item itself. See also ATTENUATOR, FIXED; RESISTOR, FIXED, FILM; and RESISTOR, THERMAL. Excludes SUPPRESSOR, IGNITION INTERFERENCE.
- DUMMY RESISTOR 86 Items
- What is a Thermal Resistor? 7175 Items
- A Thermal Resistor (RESISTOR,THERMAL) is a thermally sensitive resistor whose primary function is to exhibit a change in electrical resistance with a change in body temperature. Item may be mounted in a probe or housing. For ballast tube type resistors, see RESISTOR (1), CURRENT REGULATING. Excludes TRANSMITTER (1), TEMPERATURE, ELECTRICAL RESISTANCE and TEMPERATURE ELEMENT, RESISTANCE METEOROLOGICAL.
- What is a Resistor Assembly? 5399 Items
- A Resistor Assembly is two or more individual fixed, variable, thermal, or adjustable resistors on a common mounting or mounted on each other. The resistors must be separable and each must be capable of functioning in accordance with its applicable item name. For variable resistors mounted in tandem with a common or dual concentric shaft, see RESISTOR, VARIABLE (as modified) and ATTENUATOR, VARIABLE. For inseparable resistors permanently cased, sealed or potted together to form a multisection unit, see RESISTOR ASSORTMENT; RESISTOR SET, MATCHED; and items which have wire leads temporarily twisted together, or are otherwise physically attached solely for convenience in handling or shipping.
- What is a Resistor Subassembly? 207 Items
- A Resistor Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a resistor, but which in itself is not a complete functioning item and cannot be assigned a definite item name.
- What is a Resistor Shield? 81 Items
- A Resistor Shield (SHIELD,RESISTOR) is an item specifically designed to be placed around a resistor for the purpose of shielding against electrical or mechanical interference. May include mounting facilities. See also COVER (as modified); HOUSING (as modified); VISOR (as modified).
- What is a Resistance Element? 1540 Items
- A Resistance Element is an item of electrically resistive material in the form of a grid, ribbon, or wire designed to be used singly or built into groups to form a resistance unit. It is usually a maintenance part for a RESISTOR (as modified), a RHEOSTAT, or similar item. Includes items which can be used as "heaters" (heating elements) but which are rated in terms of resistance and resistance tolerance. Excludes ABSORBER, RADIO FREQUENCY RADIATION; HEATER, THERMAL RELEASE; HEATING ELEMENT, ELECTRICAL (as modified); and RESISTOR (as modified).
- What is a Film Fixed Resistor? 167788 Items
- A Film Fixed Resistor (RESISTOR,FIXED,FILM) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of either a thin layer of conductive material, containing either binders or insulating materials, deposited on an insulated form; or an alloy of metal and ceramic materials, usually fused to an insulated form. Opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the resistor. See also ATTENUATOR, FIXED and RESISTOR, FIXED, COMPOSITION. Excludes carbon composition type resistors.
- What is a Voltage Sensitive Resistor? 1639 Items
- A Voltage Sensitive Resistor (RESISTOR,VOLTAGE SENSITIVE) is a resistor specifically designed so that its ohms value decreases with increasing applied voltage over at least a portion of its rated ohmic range. See also ABSORBER, OVERVOLTAGE.
- What is a Current Regulating Resistor? 308 Items
- A Current Regulating Resistor (RESISTOR,CURRENT REGULATING) is a resistor with its resistive element contained in a gas filled inclosure, specifically designed to maintain a relatively constant current flow in a circuit by compensating for variations in voltage. See also RESISTOR, THERMAL and RESISTOR, VOLTAGE SENSITIVE.
- What is a Resistor Holder? 556 Items
- A Resistor Holder (HOLDER,RESISTOR) is an item designed primarily to mechanically and/or electrically accommodate one or more resistors in such a way that they may be readily inserted or removed. For items in which the resistors are to be mounted by using screw type terminals or solder lugs, see TERMINAL BOARD. If the holder will accommodate either fuses or resistors, use item name FUSEHOLDER. For items designed to accommodate lamp base type resistors, see LAMPHOLDER and LAMPHOLDER ASSEMBLY.
- What is a Resistor Assortment? 608 Items
- A Resistor Assortment is two or more of the same or different types of resistors of different known values grouped together in a single package and intended for individual replacement and wide selectivity range.
- What is a Matched Resistor Set? 767 Items
- A Matched Resistor Set (RESISTOR SET,MATCHED) is a grouping of two or more separate fixed resistors which, when connected in series or parallel, will produce a specified total resistance, or whose resistance values are equal to each other within a specified tolerance. For items which are connected as required for use, and/or which are mounted on a common mounting or on each other, see RESISTOR ASSEMBLY. Excludes NETWORK, IMPEDANCE MATCHING.
- What is a Film Fixed Resistor Network? 10848 Items
- A Film Fixed Resistor Network (RESISTOR NETWORK,FIXED,FILM) is an arrangement of multiple fixed resistive elements or discrete resistors permanently encased, encapsulated, or potted together, to form an inseparable unit. The resistive elements, consisting of a thin layer of conductive material deposited on or fused to an insulating base, usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR ASSEMBLY; RESISTOR NETWORK, FIXED-VARIABLE; and RESISTOR SET, MATCHED.
- What is a Wire Wound Fixed Resistor Network? 416 Items
- A Wire Wound Fixed Resistor Network (RESISTOR NETWORK,FIXED,WIRE WOUND) is an arrangement of multiple fixed resistive elements or discrete resistors permanently encased, encapsulated, or potted together, to form an inseparable unit. The resistive elements, consisting of high resistance wire (or ribbon), usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR ASSEMBLY; RESISTOR NETWORK, FIXED-VARIABLE; and RESISTOR SET, MATCHED.
- What is a Fixed-Variable Resistor Network? 93 Items
- A Fixed-Variable Resistor Network (RESISTOR NETWORK,FIXED-VARIABLE) is an arrangement of multiple fixed and variable resistive elements or discrete resistors permanently encased, encapsulated, or potted together to form an inseparable unit. The resistive elements may consist of a thin layer of conductive material deposited on or fused to an insulating base, or may consist of high resistance wire (or ribbon). The elements usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED, (as modified); RESISTOR, VARIABLE, (as modified); RESISTOR ASSEMBLY; and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED, WIREWOUND.
- What is a Hybrid Variable Resistor? 261 Items
- A Hybrid Variable Resistor (RESISTOR,VARIABLE,HYBRID) is 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).
- What is an Inductive Wire Wound Fixed Resistor? 35637 Items
- An Inductive Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND,INDUCTIVE) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The item must have inherent characteristics of inducing self-inductance. Opposition to current flow is an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Exclut s SUPPRESSOR, IGNITION INTERFERENCE. See also RESISTOR (1), FIXED, WIRE WOUND, NONINDUCTIVE.
- What is a Noninductive Wire Wound Fixed Resistor? 3278 Items
- A Noninductive Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND,NONINDUCTIVE) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The items must have inherent characteristics of inducing little or no self-inductance. Opposition to current flowo s an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Excludes SUPPRESSOR, IGNITION INTERFERENCE. See also RESISTOR (1), FIXENTEWIRE WOUND, INDUCTIVE.
- What is a Nonprecision Nonwire Wound Variable Resistor? 26598 Items
- A Nonprecision Nonwire Wound Variable Resistor (RESISTOR,VARIABLE,NONWIRE WOUND,NONPRECISION) is 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 or 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, WIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
- What is a Nonprecision Wire Wound Variable Resistor? 19992 Items
- A Nonprecision Wire Wound Variable Resistor (RESISTOR,VARIABLE,WIRE WOUND,NONPRECISION) is 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.
- What is a Precision Nonwire Wound Variable Resistor? 1438 Items
- A Precision Nonwire Wound Variable Resistor (RESISTOR,VARIABLE,NONWIRE WOUND,PRECISION) is 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 finctional tolerance (linearity) of the output is equal to or less than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually postioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see REHOSTAT 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, WIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE NONWIRE WOUND, NONPRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
- What is a Precision Wire Wound Variable Resistor? 4987 Items
- A Precision Wire Wound Variable Resistor (RESISTOR,VARIABLE,WIRE WOUND,PRECISION) is 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.
- What is a Mounting Plate? 40 Items
- A Mounting Plate (PLATE,MOUNTING) is a metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See SUPPORT, as modified. Do not use if a more specific name applies.
- What is a Voltage Sensitive Resistor Network? 110 Items
- A Voltage Sensitive Resistor Network (RESISTOR NETWORK,VOLTAGE SENSITIVE) is an arrangement of multiple voltage sensitive resistors permanently, encased, encapsulated or potted together to form an inseparable unit. The voltage sensitive resistors usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR VARIABLE (as modified); RESISTOR ASSEMBLY and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED, WIREWOUND and RESISTOR NETWORK, THERMAL.
- What is a Thermal Resistor Network? 14 Items
- A Thermal Resistor Network (RESISTOR NETWORK,THERMAL) is an arrangement of multiple thermally sensitive resistors permanently encased, encapsulated, or potted together to form an inseparable unit. The thermally sensitive resistors usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR, VARIABLE (as modified); RESISTOR ASSEMBLY; and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED WIREWOUND; and RESISTOR NETOWRK, VOLTAGE SENSITIVE.
- What is a Motor Driven Variable Resistor? 168 Items
- A Motor Driven Variable Resistor (RESISTOR,VARIABLE,MOTOR DRIVEN) is a resistor, whose resistance value is controlled by an electric motor, which is coupled to the resistor shaft by a friction type clutch.
- What is a Film Fixed Chip Resistor? 13056 Items
- A Film Fixed Chip Resistor (RESISTOR,CHIP,FIXED,FILM) is a resistor whose ohmic value cannot be adjusted or varied. The resistor element consists of either a thin layer or conductive material, containing neither binders or insulating materials, deposited on an insulated form, or an alloy of metal and ceramic materials, usually fused to an insulated form. Opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the resistor. Primarily intended for incorporation into microelectronic circuits and surface mounted applications.
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