Resistors

Current Sensing & Low Resistance Resistors (131)

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 (57)

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 CC2015WB Series

Low Resistance Precision Chip Resistors
  • Low resistance precision wire-bondable surface-mount resistor
  • Metalised back surface for soldering to a heat sink with bondable termination pads
  • 2-terminal current sense resistor with 4-terminal connections available (see datasheet for further details)
  • Chip size of 2015
  • Aluminium wire to be used for bonding
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CC2520FC Series

Low Resistance Precision Chip Resistors
  • Low resistance precision flip-chip surface-mount resistor
  • 2-terminal current sense resistor with recommended 4-terminal PCB layout
  • Chip size of 2520
  • Solder coated pads between 0.01Ω and 0.02Ω, solderable pads between 0.025Ω and 10Ω
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CC2520WB Series

Low Resistance Precision Chip Resistors
  • Low resistance precision wire-bondable surface-mount resistor
  • Metalised back surface for soldering to a heat sink with bondable termination pads
  • 2-terminal current sense resistor with 4-terminal connections available (see datasheet for further details)
  • Chip size of 2520
  • Aluminium wire to be used for bonding
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CD2015FC Series

Low Resistance Precision Chip Resistors
  • Low resistance precision flip-chip surface-mount resistor
  • Utilises the proven Caddock Micronox® resistance films to achieve the unique low resistance range
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Chip size of 2015
  • Bare ceramic back surface
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CD2015WBA Series

Low Resistance Precision Chip Resistors
  • Low resistance precision wire-bondable surface-mount resistor
  • Utilises the proven Caddock Micronox® resistance films to achieve the unique low resistance range
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Chip size of 2015
  • Aluminium wire to be used for bonding
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CD2520FC Series

Low Resistance Precision Chip Resistors
  • Low resistance precision flip-chip surface-mount resistor
  • Utilises the proven Caddock Micronox® resistance films to achieve the unique low resistance range
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Chip size of 2520
  • Bare ceramic back surface
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CD2520WBA Series

Low Resistance Precision Chip Resistors
  • Low resistance precision wire-bondable surface-mount resistor
  • Utilises the proven Caddock Micronox® resistance films to achieve the unique low resistance range
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Chip size of 2520
  • Aluminium wire to be used for bonding
  • Inductance of less than 5nH typical
  • Maximum chip temperature of +150°C
  • Temperature range of -55°C to +150°C

Caddock CHR2520FC Series

High Resistance Precision Chip Resistors
  • High resistance precision flip-chip surface-mount resistor
  • Designed for use in extremely low signal detection / amplification circuits
  • Solderable metallised termination pads on the same side as the resistive element with a bare ceramic back surface
  • Maximum chip temperature of +85°C
  • Temperature range of -40°C to +85°C

Caddock HVD Series

Ultra-Precision Voltage Divider Networks
  • Ultra-precision through-hole high voltage divider
  • 6 standard models of the HVD series
  • Monolithic voltage dividers built with ceramic sandwich construction
  • Ratios (RT:R2) of 100:1 or 1,000:1
  • Ideal for high performance voltage division applications in medical equipment, laboratory equipment and analytical instruments
  • Over voltage of 1.5 times rated voltage for 5s

Caddock MG -15 Range

Precision High Voltage Resistors
  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 960V up to 48kV *
  • Resistance values from 6.5MΩ up to 2GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model

Caddock MG Extended Range

Precision High Voltage Resistors
  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 2kV up to 30kV *
  • Resistance values from 600Ω up to 10GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from +25°C to +105°C
  • Operating Temperature Range of -55°C to +225°C
  • Maximum power rating from 1.5W up to 15W *
* Dependant on selected resistor model

Caddock MG Standard Range

Precision High Voltage Resistors
  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 600V up to 30kV *
  • Resistance values from 200Ω up to 2GΩ *
  • Tolerances of ±0.1%, ±0.25%, ±0.5% and ±1%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model

Caddock MK227 Series

Precision Power Radial-Lead Film Resistors
  • Precision power film radial leaded through-hole resistor
  • Non-inductive with expanded resistance range
  • Maximum working voltage of 200V
  • Compact rectangular package with standard lead spacing
  • Constructed with Caddock’s Micronox® resistance films fired onto a solid ceramic substrate
  • Extended life stability is typically better than 0.1% per 1,000 hours
  • Temperature range from -40°C up to +150°C

Caddock MK232 Series

Precision Power Radial-Lead Film Resistors
  • Precision power film radial leaded through-hole resistor
  • Non-inductive with expanded resistance range
  • Maximum working voltage of 200V
  • Compact rectangular package with standard lead spacing
  • Constructed with Caddock’s Micronox® resistance films fired onto a solid ceramic substrate
  • Extended life stability is typically better than 0.1% per 1,000 hours
  • Temperature range from -40°C up to +150°C

Caddock MK727 Series

Precision Power Radial-Lead Film Resistors
  • Precision power film radial leaded through-hole resistor
  • Non-inductive with expanded resistance range
  • Maximum working voltage of 400V
  • Compact rectangular package with standard lead spacing
  • Constructed with Caddock’s Micronox® resistance films fired onto a solid ceramic substrate
  • Extended life stability is typically better than 0.1% per 1,000 hours
  • Temperature range from -40°C up to +150°C

Caddock MK732 Series

Precision Power Radial-Lead Film Resistors
  • Precision power film radial leaded through-hole resistor
  • Non-inductive with expanded resistance range
  • Maximum working voltage of 400V
  • Compact rectangular package with standard lead spacing
  • Constructed with Caddock’s Micronox® resistance films fired onto a solid ceramic substrate
  • Extended life stability is typically better than 0.1% per 1,000 hours
  • Temperature range from -40°C up to +150°C

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.