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Resistors

Resistors
Resistors
A resistor is a passive two-terminal electrical component that introduces electrical resistance to a circuit. They reduce current flow, adjust signals, divide voltages, and more. Resistors dissipate electrical power as heat, with resistance measured in ohms according to Ohm’s law.

Resistors are ubiquitous in modern electronics, and critical components in just about every electrical device. Because their primary purpose is to limit current, and the type, size and materials used to describe the resistor play an important role in how the resistor behaves in the circuit. Larger resistors can dissipate more power as heat and withstand high temperatures, suitable for high-power applications like motor braking and power transmission. Smaller resistors with a metal foil design limit less current but provide the highest degree of precision and stability, making them more useful in sensitive circuits that are susceptible to excess noise.

Most resistors are simply “built-in” to most modern components like integrated circuits and microprocessors, but many standalone options are available to provide a variety of panel and circuit board solutions.

WIREWOUND POWER Series Image
  • 12~1000 Watts
  • .02~392K Ohm Values Available
  • Fixed or Adjustable Resistance
  • Vitreous Enamel Coating
  • Radial Lug Terminals
Ohmite's wirewound power resistors are available in fixed or adjustable resistance values, making them ideal for a variety of high wattage applications. They feature a hollow core for maximum heat dissipation and to permit secure fastening. These resistors also offer the durability of lead free vitreous enamel coating and all-welded construction.
  • Wirewound
  • Mounting Hardware Available; Included on Some Models
1/10 W THROUGH 2 W Series Image
  • .1~10 Watts
  • Various Resistance Values
  • Various Tolerances
  • Various Compositions
  • Axial Leads
These miscellaneous axial lead resistors include values up to 10 watts. This category of resistors consists of various brand names, ohmic values and composition types.
  • Includes Precision MIL Spec Resistors
AXIAL LEAD WIREWOUND Series Image
  • 1~11 Watts
  • .01~150K Ohm Values Available
  • 5% and 1% Tolerances
  • Vitreous or Silicone Coating
  • Axial Leads
Axial lead wirewound resistors from Ohmite offer an economical solution for a wide range of electrical and electronic applications. These resistors feature a durable, all-welded construction for the highest of performance and reliability.
  • Wirewound
  • Mounting Hardware Available for Some Models
POWR-RIB Series Image
  • 700~1600 Watts
  • .1~42.1 Ohm Values Available
  • Fixed or Adjustable Resistance
  • Edgewound or Round Wire
  • Clamp Terminals
Ohmite's Powr-Rib series are constructed of a heavy resistance alloy mounted on ceramic insulators and supported by a metal mounting bracket. The edgewound design provides very low resistance with high power capacity, while the roundwire design provides a higher resistance with lower power capacity.
Edgewound units provide clamp-type terminals, permitting a reliable connection which can be moved along the resistive element to obtain intermediate values.
  • Edgewound Round Wire
  • Integral Mounting Hardware
89 Series Image
  • 5~50 Watts
  • .005~100K Ohms Available
  • 1%, 5% Tolerances Available
  • Heat Sinkable
  • Axial Leads
These aluminum-housed resistors from Ohmite offer tight tolerance and temperature coefficient values as well as a maximized operating temperature range.
  • Wirewound
  • Panel Mount
BROWN DEVIL LUG with LEAD Series Image
  • 5.25~20 Watts
  • .03~100K Ohm Values Available
  • Fixed Resistance
  • Vitreous Enamel Coating
  • Lugs & Axial Leads
Ohmite's Brown Devil series are small, exceptionally durable power resistors. They feature all-welded construction and rugged, flame resistant conformal lead free vitreous enamel coating to ensure successful performance under high temperatures.
  • Wirewound
  • Mounting Hardware Available
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