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General Specifications


	Configuration:
	Your choices are...
	Single Resistor		Single resistors are standard, passive resistors with a single resistance value.
	Resistor Chip Array		Resistor chip arrays contain several resistors housed in a single package.
	Other		Other unlisted, specialized, or proprietary configurations.
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	Category / Application
	Your choices are...
	Automotive		Devices are designed for the automotive industry. They may be used in anti-lock brakes or control systems, and in power train, power steering, or engine control applications.
	Aerospace		Devices are designed for the aerospace industry. They may be used in satellites, sonar, or general avionics products.
	Current Sensing Resistor		Current sensing resistors convert flow-through current to a voltage drop. By monitoring or measuring the voltage drop, current flowing through the resistor can be measured. Typically, current sensing resistors are used to monitor current in products such as power supplies, receptacles, and battery packs.
	Fusible Resistor		Fusible resistors are made of a partially-organic film. The flow of high-current melts the film, opening the circuit and stopping the flow of current through the resistor.
	General Use		General-use devices can be used in most applications. They are often used in consumer products, computers or disk drives, and to provide over-current protection.
	High Current Resistor		High-current resistors are designed for high-current applications.
	High Frequency Resistor		High-frequency resistors are designed for high-frequency applications.
	High Voltage Resistor		High-voltage resistors are designed for high-voltage applications.
	Medical		Medical resistors are used in medical equipment and systems.
	Power Resistor		Power resistors are designed for high-power applications. They are used in the automotive industry, control systems, and power generation and distribution applications. Power resistors include load banks, grounding resistors, and dynamic braking resistors (DBR).
	Precision Resistor		Precision resistors have a very-low temperature coefficient of resistance (TCR) and a very low tolerance value.
	Surge Resistor		Surge resistors are designed to handle overload conditions in electrical and electronic circuits.
	Telecom Resistor		Telecom resistors are designed for telecommunications applications. They are used in telephones, mobile devices, two-way radios, and hand-held devices.
	Other		Other unlisted or proprietary resistor categories.
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	Technology / Construction
	Your choices are...
	Carbon Composition		Carbon-composition resistors consist of powdered carbon, an insulating material, and a resin binder. Their resistance value is determined by the ratio of powdered carbon to insulating material. Carbon-composition resistors usually have a precision of no greater than 5%. This means that a 100-ohm resistor can range from 95 to 105 ohms in actual value.
	Carbon Film		Carbon-film resistors are relatively inexpensive and readily available. They have resistance values within ±10% or ±5% of their marked or nominal value.
	Cermet		Cermet devices are made of cermet, a composite that consists of ceramic and metallic materials. They are often used in high-temperature applications.
	Ceramic Composition		Ceramic-composition resistors are solid-body devices made of a high-temperature, ceramic resistive material. They have bonded metal contacts. The construction of ceramic-composition resistors concentrates nearly all of the component mass into the resistive element, resulting in a rugged device with high-energy capacity.
	Metal Alloy		Metal-alloy resistors contain metallic elements. Varying these elements can alter the alloy's properties.
	Metal Film		Metal-film resistors are produced by depositing a resistive element on a high-grade, ceramic rod. The metal film’s resistive element may be carbon, nickel chromium; or a mixture of metal and glass, or metal and metal oxide. The precise resistance is achieved by removing part of the metal film in a spiral pattern around the rod. Typically, the tolerance is within ±2% or ±1% of the nominal value. When a tolerance of 1% is achieved, a 100-ohm, 1% resistor falls in the range of 99 to 101 ohms.
	Metal Foil		Resistors are made of metal foil.
	Metal Oxide		Metal-oxide resistors are similar to metal-film resistors. Although there are some differences between these resistor types, none affect their use in simple circuits.
	Tantalum		Resistors are made of tantalum, an element that is also used in capacitors. Tantalum resistors are used in audio applications.
	Thick Film		Thick-film resistors are made by stenciling a resistive metallic paste or ink onto a base in a process similar to silk screening. Usually, this resistive material is considered to be proprietary.
	Thin Film		Thin-film resistors are formed by vapor-deposition of a thin layer of resistive material onto a base. They are trimmed to a specific value by lasering or sandblasting.
	Wirewound Resistor		Wirewound resistors are made by winding thin wire onto a ceramic rod. Highly-accurate devices are used in multimeter, oscilloscopes and other measuring equipment. Wirewound resistors that can pass large currents without overheating are used in power supplies and other high-current circuits.
	Other		Other unlisted, specialized, or proprietary configurations.
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	Packing Method
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	Tape Reel		Components are packed in tape reel assemblies that include a carrier tape with embossed cavities for storing individual components. A cover tape seals the carrier tape in place. This composite tape is then wound on a reel that is placed in a corrugated shipping box for transport and delivery. Customers unpack the reels and load them into industry-standard, pick-and-place board assembly equipment. Tape and reel assemblies provide component isolation and are designed for surface mount packages such as quad flat package (QFP) and thin quad flat package (TQFP). Typically, carrier tape is made from a polystyrene (PS) or PS-laminate film with a uniform film thickness between 0.2 mm to 0.4 mm. Carrier tape design is defined largely by component length, width, and thickness. Cover tape is made from a polyethylene teraphthalate (PET) film or film laminate with an adhesive applied to the underside of the film. This adhesive is usually heat and pressure sensitive to ensure a positive, consistent seal between the carrier tape and the cover tape. The reels that contain the composite tape are typically made of polystyrene and have one, two, or three parts. Reel dimensions meet EIA-481-1, EIA-481-2, and EIA-481-3 standards.
	Rail		This is a method of packaging IC chips for production environments.
	Bulk Pack		Components are distributed as individual parts.
	Tray		Components are packed in trays that are made of carbon-powder or fiber materials and molded into rectangular outlines that contain matrices of uniformly spaced pockets. These containers protect components during shipping and provide proper component location and orientation for use with industry-standard, pick-and-place board assembly equipment. Trays are designed for components for that have leads on four sides and that require component lead isolation during shipping, handling, or processing. For example, quad flat package (QFP) and thin quad flat package (TQFP) components are often shipped in trays. To facilitate shipping and handling, trays are stacked and bound together in standard configurations. To provide rigidity, an empty cover tray is added to the top of the load. Typical stacking configurations consist of five full trays and one cover tray, and ten full trays and one cover tray. Customer requirements determine whether trays are shipped in single or multiple stacks.
	Shipping Tube / Stick Magazine		Components are packed in shipping tubes or stick magazines that are made of rigid polyvinylchloride (PVC) and extruded in industry-standard sizes. These containers protect components during shipping and provide proper component location and orientation for use with industry-standard, pick-and-place board assembly equipment. To facilitate shipping and handling, shipping tubes and stick magazines are usually loaded into intermediate containers such as boxes or bags to form standard quantities. Intermediate-level packing quantities for shipping tubes and stick magazines often vary by pin count and package type.
	Other		Other unlisted packing methods.
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Performance Specifications


	Resistance Range		The device's resistance range.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Tolerance		Resistance tolerance is usually expressed a percentage.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Temperature Coefficient (TCR)		Temperature coefficient of resistance (TCR) measures the rate at which the nominal resistance changes as a function of temperature. TCR is expressed in parts per million (ppm) per degree Celsius (C), or ppm/C.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Power Rating		Power rating is the maximum real power in watts (W) that the resistor supports.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Operating DC Voltage		The device's maximum operating direct-current (DC) voltage.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Current Rating		The device's maximum operating current.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Number of Resistors		The total number of resistors in the package.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Operating Temperature		This is the full-required range of ambient operating temperature.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.

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Standards and Features


	Standard and Compliances
	Your choices are...
	RoHS Compliant		Restriction of Hazardous Substances (RoHS) is a European Union (EU) directive that requires all manufacturers of electronic and electrical equipment sold in Europe to demonstrate that their products contain only minimal levels of the following hazardous substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polybrominated diphenyl ether.
	ELV Directive		End-of-Life Vehicles (ELV) is a European Union (EU) directive that requires manufacturers of automotive products sold in Europe to demonstrate that their products contain only minimal levels of mercury, cadmium and lead. Lead can still be used as an alloying additive in copper, steel and aluminum.
	UL		Underwriters Laboratories (UL) is a non-profit organization that tests components, systems, and materials according to its published standards for safety. Products that receive UL approval bear a UL Mark.
	CSA		Products that bear a CSA Mark have been tested by the Canadian Standards Association (CSA) and meet applicable standards for safety and/or performance. These standards are written and administered by organizations such as the American National Standards Institute (ANSI), Underwriters Laboratories (UL), and CSA International. CSA Marks may appear alone or with indicators. CSA Marks that appear alone are used with products certified primarily for the Canadian market, to the applicable Canadian standards. CSA Marks that appear with the indicators “C” and “US” or “NRTL/C” are used with products certified for both the U.S. and Canadian markets, to the applicable U.S. and Canadian standards.
	IEC		The International Electro technical Commission (IEC) is a global, non-profit organization that develops and maintains voluntary quality, safety, and performance standards for electrical materials, products, and systems The IEC also publishes standards for the electronics and telecommunications industries. The IEC’s membership consists of the electro technical standards organizations from each of its 51 member nations. The American National Standards Institute (ANSI) represents the United States.
	WEEE Compliant		Waste Electrical and Electronics Equipment (WEEE) is a European Union (EU) directive designed to encourage the reuse, recycling and recovery of electrical and electronic equipment. WEEE is also designed to improve the environmental impact and performance of this equipment. The WEEE directive establishes requirements and criteria for the collection, treatment, recycling and recovery of electrical and electronic equipment. It also makes producers responsible for financing these activities. Retailers and distributors must provide a way for consumers to return used or obsolete equipment without charge.
	Other		Other unlisted standards.
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	Features
	Your choices are...
	Heat Sink		The device uses a heat sink to dissipate heat.
	Non-Inductive		The device is non-inductive.
	Air Cooled		The device is air-cooled.
	Water Cooled		The device is water-cooled.
	Non-Flame Coating		The device has a coating which provides protection against flames.
	Fireproof Case		The device is fireproof.
	Electrically Isolated Case		The device is covered by an electrically-isolated case.
	ESD Protection		The device is protected against electrostatic discharge (ESD).
	NEMA Enclosure		The device is encased in a NEMA enclosure. NEMA enclosures are rated by the National Electrical Manufacturers Association (NEMA) and designed for hazardous or non-hazardous locations and indoor or outdoor use.
	Military Standards		Devices comply with U.S. military standards.
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