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Resistors are electrical components that oppose the flow of either direct or alternating current. They are used to protect, operate, or control circuits. Voltages can be divided with the use of resistors. In combination with other components, resistors can also be used to make electrical waves into shapes most suited to the designer’s requirements. Resistors can have a fixed value of resistance, or they may be variable or adjustable within a certain range. Typically, resistor values are expressed in ohms, a unit of resistance. Materials of construction for resistors include carbon composition, carbon film, ceramic composition, metal alloy, metal film, metal oxide, thick film, thin film, and wire. Common lead types include axial leads, gull-wing leads, J-leads, radial leads, screw terminals, and tab terminals. Resistors without leads are also available.

Performance specifications to consider when searching for resistors include resistance range, tolerance, power rating, continuous operating voltage, temperature coefficient, configuration, and operating temperature. Power rating is the maximum power supported by the resistor. Resistors can be operated at any combination of voltage and current as long as the power rating is not exceeded, and provided that neither the current rating nor the voltage rating is exceeded. Typically, power rating is measured in watts (W) and released as heat energy. Continuous operating voltage is measured in volts (V). The temperature coefficient of resistance (TCR) parameter measures the rate at which the nominal resistance value changes as a function of temperature. TCR for resistors is expressed in parts-per million (ppm) per degree Celsius, or ppm/C. .

Engineering Calculators Related to Resistors
Ohms' Law Calculator; Voltage Divider Calculator For DC Circuits; Voltage Divider Calculator For DC Circuits With Load; Voltage Divider Calculator For AC Circuits; Voltage Divider Calculator For AC Circuits With Load

Products & Services Related to Resistors
Chip Resistors
Chip resistors are passive resistors with a form factor of an integrated circuit (IC) chip. Typically, they are manufactured using thin-film technology.
Current Sensing Resistors
Current sensing resistors convert the current flowing through it to a voltage drop. Monitoring or measuring this voltage drop allows the current through the resistor to be measured. Applications for current sensing resistors include power supplies, receptacles, and battery packs. 
Digital Potentiometers
Digital potentiometers are three-terminal resistors with an adjustable center connection. To set the output resistance, a digital signal is sent through an electrical interface.
Power Resistors
Power resistors are used in power generation and distribution, high-voltage applications, control systems, and other power system applications. They include load banks, grounding resistors, and dynamic braking resistors.
Resistor, Capacitor Networks
Resistor, capacitor networks (RC networks) are integrated circuits (ICs) that contain resistor-capacitor arrays in a single chip.
Resistors and Potentiometers
Resistors and potentiometers are passive electronic components that oppose the flow of either alternating current (AC) or direct current (DC). 
Shunt Resistors
Shunts resistors are connected in parallel with an instrument or component to divert electrical current. They provide an alternate path for current in case of failure.

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Engineering Web: Resistors
Pages: 1 - 5 of 1085813
Resistors - Caddock High Performance Film Resistors
high voltage resistors, current sense resistors, chip resistors, high frequency resistors, rf resistors, load resistors, pulse resistors, and
See Caddock Electronics, Inc. Information
Resistors
Resistors Tools and Equipment Glossary of Terms
CRESSALL Electrical Power Resistors - power resistors, dynamic...
Cressall Resistors has 100 years experience in producing power resistors for use in the electro-technical market.
See Cressall Resistors, Ltd. Information
Resistors From NTE Electronics, Inc.
A Vast Line Of Reliable Resistors The NTE quality line of Flame Retardant Resistors is designed for replacement and original equipment use.
See NTE Electronics, Inc. Information
Resistors - film resistors, wirewound resistors, power...
Power wirewound resistors The assortment of power power wirewound resistors wirewound resistors

Part Numbers for Resistors

Part # Distributor Manufacturer Product Category Description
LVR03R0400FE12 Newark VISHAY DALE Wirewound, MIL-PRF-49465 Wirewound Resistor; Series:LVR; Resistance:0.04Ohm; Resistance Tolerance:+/- 1 %; Power Rating:3W; Terminal Type:Axial Leaded; Leaded Process Compatible:Yes; MIL SPEC:MIL-PRF-49465; Packaging:Bulk; Mounting Type:Through Hole RoHS Compliant: Yes
RER55F86R6M Mectronic RESISTOR Not Provided RESISTOR

More >>
See more product announcements for Resistors
UXP SERIES Power Resistor

UXP SERIES Power Resistor
EBG, LLC


RT and RL Series 2W Replacement

RT and RL Series 2W Replacement
HVR Advanced Power Components, Inc.


Precision High Voltage Resistor - PHV Series"NEW"

Precision High Voltage Resistor - PHV Series"NEW"
Viking Tech Corporation


11 See more product announcements for Resistors

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