Vishay - Extreme Passives
Vishay » Extreme Passives » Power Wirewound Resistors
Power Wirewound Resistors
High-power resistors with ratings up to 2500 W (at 25 °C) with numerous mounting and heatsink options and custom housing designs
Featured Products
RB Series
Wirewound Resistors, Industrial Power, Tubular, Ribwound (RB), Fixed (RBEF, RBSF), (RBEA, RBSA)
THE VISHAY VALUE
Portfolio Overview
  • Power ratings up to 2500 W (20 kW for assemblies) at 25 °C
  • Operating conditions up to 450 °C
  • High stability, high current, tight tolerance (± 0.05 %)
  • Watercooled devices
  • Ribwound, roundwire, and oval devices
  • Adjustable and non-inductive devices
  • Numerous mounting and heatsink options and custom housing designs
Key Features and Benefits
  • Large portfolio offers the "right" solutions for application requirements
  • Meet specific requirements for long life, tight tolerance, high pulse power, and high operating temperature
  • Superior inductive performance
  • Custom assemblies (housing, hardware, mounting) available to meet space requirements
  • Space saving with watercooled
Advantages
  • Power requirements over 50 W with high pulse overloads, high temperature environments, and excellent reliability requirements (high maintenance costs – fit and forget)
  • Mechanically constrained designs (custom housing, heatsinks, mounting options, etc.)
Market Position
  • Largest supplier of resistor technologies in the market
  • Proven source of high-performance wirewound resistors for power applications and harsh operating conditions
  • Established supplier of custom assemblies and housings
Applications
  • Industrial - Power systems, laser and water-cutting controls, dynamic braking (elevators, etc.), pumps and bleed resistors with large capacitors, down-hole drilling and mining, and inverters for alternative energy systems
  • Medical - High-power equipment (X-ray, MRI, scanners)
  • Telecom - Battery back-up for cell phone towers, antennas, and radar systems
  • HVDC SVC valves / large drives (snubber and dividers)

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