Resistors

Current Sensing & Low Resistance Resistors (129)

Low-ohmic resistors used as the sensing element, where the voltage across a known resistance is the measurement. Four-terminal construction, low temperature coefficient and low thermal EMF keep a milliohm-level reading honest. Specified as shunts in battery and power supply monitoring.

Precision / Ultra-Precision Resistors (126)

Resistors specified by tolerance, temperature coefficient and long-term stability rather than by power rating. Used in instrumentation front ends, references and calibration circuits, where drift over years is the property that decides the design.

Load Banks (89)

Resistive load banks that dissipate a controlled amount of power so a supply or converter can be tested under load. Rated by continuous power, resistance range and cooling method.

Non-Magnetic Resistors (64)

Resistors made without ferromagnetic material, so they neither distort a magnetic field nor move within one. Intended for magnetic resonance imaging, precision instrumentation and any assembly sitting inside a measured field.

Z Foil resistors (56)

Bulk metal foil resistors, holding temperature coefficient, load-life drift and thermal EMF to very low levels, with coefficients down to ±0.2ppm/°C on selected series. Used in metrology, automatic test equipment and space-qualified work.

High-Temperature Resistors (36)

Resistors qualified for high ambient and high surface temperature, in precision and power constructions. Derating curve, terminal material and mounting method carry more weight here than the room-temperature specification.

Power Resistors (33)

Resistors for higher dissipation, in several mounting styles and across a wide resistance span. The thermal path is as much part of the specification as the resistance value, because the rating depends on how the heat leaves the part.

Networks & Voltage Dividers (22)

Resistor networks and voltage dividers where the ratio between elements matters more than the absolute value. Matched and tracking configurations hold that ratio across temperature, for references, instrumentation amplifiers and precision measurement.

High-Voltage Resistors (21)

Resistors rated by voltage as well as by power, for measurement dividers, discharge paths and high-voltage supply control. Creepage, tracking resistance and voltage coefficient are the properties that decide whether the part survives the application.

Standard Resistors (9)

General-purpose resistors in common values, tolerances and packages, for the parts of a design where the resistor is not the critical element.

Thermosensitive Resistors (7)

Resistors whose resistance changes predictably with temperature, used deliberately as a compensating element rather than held stable against it. For temperature measurement, bias compensation and thermal protection in analogue and power circuits.

Caddock MP820 Series

Kool-Pak® Power Film Resistors
  • TO-220 style power through-hole resistor
  • Metal mounting tab
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 300V
  • Operation up to +175°C case temperature
  • Resistor element is electrically isolated from the mounting surface

Caddock MP821 Series

Kool-Pak® Power Film Resistors
  • TO-220 style power through-hole resistor
  • Metal mounting tab
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Operation up to +175°C case temperature
  • Resistor element is electrically isolated from the mounting surface

Caddock MP825 Series

Kool-Pak® Power Film Resistors
  • TO-126 style power through-hole resistor
  • Integrated copper mounting surface in moulded package
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 300V
  • Operation up to +150°C case temperature
  • Resistor element is electrically isolated from the mounting surface

Caddock MP850 Series

Kool-Pak® Power Film Resistors
  • TO-220 style power through-hole resistor
  • Integrated copper mounting surface in moulded package
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 300V
  • Operation up to +150°C case temperature
  • Resistor element is electrically isolated from the mounting surface

Caddock MP9100 Series

Kool-Pak® Power Film Resistors
  • TO-247 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating is limited by the power
  • Operation up to +175°C case temperature

Caddock MP915 Series

Kool-Pak® Power Film Resistors
  • TO-126 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 200V
  • Operation up to +150°C case temperature

Caddock MP916 Series

Low Resistance Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating is limited by the power
  • Operation up to +150°C case temperature

Caddock MP925 Series

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 500V
  • Operation up to +150°C case temperature

Caddock MP930 Series

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

Caddock MP930-1.00k-1%

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

Caddock MP930-1.50k-1%

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

Caddock MP930-100-1%

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

Caddock MP930-3.00-1%

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

RARA FRH 25C

High Power Metal Clad Resistors
  • Metal clad thick film resistor
  • Resistance range from 1kΩ to 2MΩ
  • Max power rating of 15W
  • Cement moulding within aluminium housing
  • Short time overload of 2 x power rating is 5 seconds
  • High stability at conventional power ratings
  • Temperature range of -55°C up to +250°C

RARA FRH 50C

High Power Metal Clad Resistors
  • Metal clad thick film resistor
  • Resistance range from 1kΩ to 2MΩ
  • Max power rating of 25W
  • Cement moulding within aluminium housing
  • Short time overload of 2 x power rating is 5 seconds
  • High stability at conventional power ratings
  • Temperature range of -55°C up to +250°C

Caddock MP930-47.0-1%

Kool-Pak® Power Film Resistors
  • TO-220 style Kool-Pak® power through-hole resistor
  • Heat sink mountable design featuring an exposed ceramic heat dissipating mounting surface
  • Non-inductive design
  • Constructed with Caddock’s Micronox® resistance film technology
  • Maximum voltage rating of 250V
  • Operation up to +150°C case temperature

Custom Component Solutions

Working alongside your design team from the earliest stage, we help you select the right part for the application and, where a standard part will not do, develop customised components with our manufacturing partners such as lead length, termination and package size.

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Resistors

Resistors run across twelve sub-categories: precision and ultra-precision, Z-foil, current sensing and low resistance, high-voltage, high-temperature, high-energy, non-magnetic, power, standard, thermosensitive, networks and voltage dividers, then load banks. Custom values are available on several lines.