Caddock

Caddock

High Performance, High Stability Film Resistors

  • Wide range of surface-mount as well as both axial and radial through-hole precision resistor and resistor network packages
  • Precision low and high ohmic, high voltage, high temperature and non-inductive high power resistors
  • Own Micronox© and Tetrinox© film technologies which offer very low TCR characteristics
  • Low TCR custom resistors, resistor networks and selected / matched resistor sets available

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Caddock 1776 Series

The 1776 precision decade resistor voltage dividers from Caddock offer between 3, 4 and 5 resistors in a single through-hole package, with ratios ranging from 10:1 up to 10,000:1. Caddock offer 39 standard models of the 1776 series including the new smaller and lower cost options. They can offer voltage ratings of up to 1.2kV continuous with an over-voltage up to 2kV. The exceptional performance of this extensive family of Caddock 1776 precision decade resistor voltage dividers has been achieved through the special combination of advantages provided by Caddock's Tetrinox® resistance films.

  • Precision through-hole decade resistor voltage dividers
  • 39 standard models of the 1776 series
  • 3, 4 and 5 decade voltage dividers with ratios from 10:1 to 10,000:1
  • Smaller models requiring less board space
  • Voltage rating from 750V up to 1.2kV (DC or RMS AC voltage applied to R1 in series with any combination of R2, R3, R4 and R5)
  • Over-voltage of up to 2kV or 1.67 times rated DC voltage (VDC or peak VAC applied to R1 in series with any combination of R2, R3, R4 and R5 for 10s)
  • Many combinations of Ratio and Absolute Tolerance as well as Ratio and Absolute TCR
  • Exceptional performance achieved through the special combination of advantages provided by Caddock's Tetrinox® resistance films

Designed for digital multimeters and range switching equipment, the Caddock 1776 precision resistor networks deliver higher performance than selected discrete resistor sets and thin-film networks.

The 1776 series is supplied in various sizes with different pin layouts depending on the resistance ratio and resistance values of the divider network.

£0.00 Ex Tax: £0.00

Caddock 1787 Series

The 1787 current sense resistor network series from Caddock offers 3 or 4 resistance values in a single through-hole package, ranging from RA = 99.9Ω, RB = 9.9Ω and RC = 0.9Ω up to RA = 1kΩ, RB = 100Ω, RC = 10Ω and RD = 1Ω. Caddock offer 12 standard models of the 1787 series with 5 network arrangements, providing the specific accuracy and resistance values required for a wide range of current measuring instruments and circuits. They can offer maximum power ratings of up to 0.75W or 1W depending on the model.

  • Through-hole current sensing resistor network
  • 12 standard models in 5 network arrangements
  • 3 or 4 resistor elements in a thin-profile single package
  • Resistance range from RA = 99.9Ω, RB = 9.9Ω and RC = 0.9Ω up to RA = 1kΩ, RB = 100Ω, RC = 10Ω and RD = 1Ω
  • The monolithic construction and standardised lead spacing simplify installation
  • Caddock's Micronox® resistance films provide exceptional stability for improved long-term measurement accuracy
  • Storage temperature between -55°C and +85°C

The Caddock 1787 current sense through-hole resistor networks utilise Caddock's Micronox® resistance films and advanced high through-put laser manufacturing capabilities to achieve many vital advantages in precision current measurement circuits, including laboratory and bench-type digital instrumentation.

The thin-profile single package configuration replaces as many as four discrete current sense resistors.

The 1787 series is supplied in various sizes with different pin layouts depending on the resistance values and electrical specifications of the current sense network. 

£0.00 Ex Tax: £0.00

Caddock 1789 Series

The 1789 custom low resistance value precision SIP resistor networks from Caddock offer resistance values as low as 0.5Ω up to 10kΩ. The design flexibility achieved by Caddock's advanced resistance film technologies is extended to low resistance values in precision resistor networks through the application of Caddock's Micronox® resistance films. By applying this technology to the low-profile, single-in-line package configuration, the Caddock 1789 custom low resistance value precision SIP resistor networks are available with a combination of features.

  • Resistance values from 0.5Ω to 10,000Ω
  • Absolute tolerance from as low as ±0.05% up to ±1.0%
  • Ratio tolerance from as low as ±0.05% up to ±1.0%
  • Absolute TCR from as low as ±50 ppm/°C up to ±100 ppm/°C (between 0°C and +70°C)
  • Ratio TCR from as low as ±15 ppm/°C up to ±80 ppm/°C (between 0°C and +70°C)
  • Power rating of between 0.1W and 2W per resistor

Where high accuracy and low resistance values must be combined, as in high accuracy current measurement circuitry, Kelvin terminations can be provided for low resistance values to minimize lead resistance errors.

The optimum design of Caddock 1789 custom low resistance value precision SIP resistor networks is best achieved when the performance of Micronox® resistance film technologies is blended with particular circuit specifications and the unique thin-profile, single-in-line package design to arrive at the final network package size, pin spacing, and pin style.

Applications for the 1789 series include:

  • Current summing networks
  • Precision termination networks
  • Precision current sense resistor networks
  • Impedance matching networks

For a custom 1789 resistor network, please contact us with any requirements and our technical team will assist you.

£0.00 Ex Tax: £0.00

Caddock CC1512FC Series

The CC1512FC low resistance precision flip-chip surface-mount resistor series from Caddock offer resistance values from as low as 0.01Ω up to 10Ω making them ideal for current sensing applications. The CC1512FC series features low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. For general applications, the CC1512FC series has a power rating of 0.75W (at +70°C).

  • Low resistance precision flip-chip resistor
  • Flip-chip version for surface-mount applications (FC)
  • 1512 chip size
  • Resistance values from 0.01Ω to 10Ω
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerances from as low as ±1.0% up to ±5.0% (resistance value dependent)
  • TCR from as low as -20 to +80 ppm/°C (resistance values of 0.5Ω and above)
  • Operating temperature range from -55°C up to +150°C

The CC1512FC series from Caddock are the best choice for switching power supplies, motor speed controls and high current sensing applications.

Thermal resistance is provided for the CC1512FC series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5), or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CC FC series including the CC1512FC:

Caddock CC FC Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CC2015FC Series

The CC2015FC low resistance precision flip-chip surface-mount resistor series from Caddock offers resistance values from as low as 0.02Ω up to 10Ω making it ideal for current sensing applications. The CC2015FC series features low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. For general applications, the CC2015FC series has a power rating of 1W (at +70°C).

  • Low resistance precision flip-chip resistor
  • Flip-chip version for surface-mount applications (FC)
  • 2015 chip size
  • Resistance values from 0.02Ω to 10Ω
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerances from as low as ±1.0% up to ±5.0% (resistance value dependent)
  • TCR from as low as -20 to +80 ppm/°C (resistance values of 0.5Ω and above)
  • Operating temperature range from -55°C up to +150°C

The CC2015FC series from Caddock is the best choice for switching power supplies, motor speed controls and high current sensing applications.

Thermal resistance is provided for the CC2015FC series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5), or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CC FC series including the CC2015FC:

Caddock CC FC Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CC2015WB Series

The CC2015WB low resistance precision wire-bondable surface-mount resistor series from Caddock offers resistance values from as low as 0.02Ω up to 10Ω making it ideal for current sensing applications. The CC2015WB series features low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. The WB variant of the CC series from Caddock is a hybrid mountable version with metallised pads for wire-bonding utilising aluminium wire and a metallised back surface for solder attachment of the back surface to a heat sinking substrate.

  • Low resistance precision wire-bondable resistor
  • Wire-bondable version for hybrid applications (WB)
  • 2015 chip size
  • Resistance values from 0.02Ω to 10Ω
  • Metallised back surface for soldering to substrate or a heat sink
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerances from as low as ±1.0% up to ±5.0% (resistance value dependent)
  • TCR from as low as -20 to +80 ppm/°C (resistance values of 0.5Ω and above)
  • Operating temperature range from -55°C up to +150°C

The CC2015WB series from Caddock is the best choice for switching power supplies, motor speed controls and high current sensing applications.

Thermal resistance is provided for the CC2015WB series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

The recommended solders are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5), or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CC WB series including the CC2015WB:

Caddock CC WB Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CC2520FC Series

The CC2520FC low resistance precision flip-chip surface-mount resistor series from Caddock offers resistance values from as low as 0.01Ω up to 10Ω making it ideal for current sensing applications. The CC2520FC series features low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. For general applications, the CC2520FC series has a power rating of 1.5W (at +70°C).

  • Low resistance precision flip-chip resistor
  • Flip-chip version for surface-mount applications (FC)
  • 2520 chip size
  • Resistance values from 0.01Ω to 10Ω
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerances from as low as ±1.0% up to ±5.0% (resistance value dependent)
  • TCR from as low as -20 to +80 ppm/°C (resistance values of 0.5Ω and above)
  • Operating temperature range from -55°C up to +150°C

The CC2520FC series from Caddock is the best choice for switching power supplies, motor speed controls and high current sensing applications.

Thermal resistance is provided for the CC2520FC series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5), or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CC FC series including the CC2520FC:

Caddock CC FC Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CC2520WB Series

The CC2520WB low resistance precision wire-bondable surface-mount resistor series from Caddock offers resistance values from as low as 0.025Ω up to 10Ω making it ideal for current sensing applications. The CC2520WB series features low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. The WB variant of the CC series from Caddock is a hybrid mountable version with metallised pads for wire-bonding utilising aluminium wire and a metallised back surface for solder attachment of the back surface to a heat sinking substrate.

  • Low resistance precision wire-bondable resistor
  • Wire-bondable version for hybrid applications (WB)
  • 2520 chip size
  • Resistance values from 0.025Ω to 10Ω
  • Metallised back surface for soldering to substrate or a heat sink
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerances from as low as ±1.0% up to ±5.0% (resistance value dependent)
  • TCR from as low as -20 to +80 ppm/°C (resistance values of 0.5Ω and above)
  • Operating temperature range from -55°C up to +150°C

The CC2520WB series from Caddock is the best choice for switching power supplies, motor speed controls and high current sensing applications.

Thermal resistance is provided for the CC2520WB series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

The recommended solders are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5), or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CC WB series including the CC2520WB:

Caddock CC WB Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CD2015FC Series

The CD2015FC low resistance precision flip-chip surface-mount resistor series from Caddock offers resistance values from as low as 0.01Ω up to 0.2Ω making it ideal for current sensing applications. The CD2015FC series features a unique pedestal terminal design for surface-mount applications as well as low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. For general applications, the CD2015FC series has a power rating of 1W (at +70°C).

  • Flip-chip version for surface-mount applications (FC)
  • 2015 chip size
  • Resistance values from 0.01Ω to 0.2Ω
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerance of ±1.0%
  • TCR from as low as 0 to +100 ppm/°C (resistance values of 0.05Ω up to 0.2Ω)
  • Operating temperature range from -55°C up to +150°C

Thermal resistance is provided for the CD2015FC series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

Please note that during soldering of all CD resistors from Caddock, the soldering temperature profile must not cause the pedestal terminals of this device to exceed +220°C.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2).

The below table gives the available specifications for the complete CD FC series including the CD2015FC:

Caddock CD FC Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CD2015WBA Series

The CD2015WBA low resistance precision wire-bondable surface-mount resistor series from Caddock offers resistance values from as low as 0.01Ω up to 0.2Ω making it ideal for current sensing applications. The CD2015WBA series features a unique pedestal terminal design for surface-mount applications as well as low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. The WBA variant of the CD series from Caddock is a hybrid mountable version with copper pedestal terminals and an aluminium surface layer for wire-bonding utilising aluminium wire and a metallised back surface for solder attachment of the back surface to a heat sinking substrate.

  • Low resistance precision wire-bondable resistor
  • Wire-bondable version for hybrid applications (WB)
  • 2015 chip size
  • Resistance values from 0.01Ω to 0.2Ω
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerance of ±1.0%
  • TCR from as low as 0 to +100 ppm/°C (resistance values of 0.05Ω up to 0.2Ω)
  • Operating temperature range from -55°C up to +150°C

Thermal resistance is provided for the CD2015WBA series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

Please note that during soldering of all CD resistors from Caddock, the soldering temperature profile must not cause the pedestal terminals of this device to exceed +220°C.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2).

The below table gives the available specifications for the complete CD WBA series including the CD2015WBA:

Caddock CD WBA Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CD2520FC Series

The CD2520FC low resistance precision flip-chip surface-mount resistor series from Caddock offers resistance values from as low as 0.01Ω up to 0.2Ω making it ideal for current sensing applications. The CD2520FC series features a unique pedestal terminal design for surface-mount applications as well as low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. For general applications, the CD2520FC series has a power rating of 1.5W (at +70°C).

  • Low resistance precision flip-chip resistor
  • Flip-chip version for surface-mount applications (FC)
  • 2520 chip size
  • Resistance values from 0.01Ω to 0.2Ω
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerance of ±1.0%
  • TCR from as low as 0 to +100 ppm/°C (resistance values of 0.05Ω up to 0.2Ω)
  • Operating temperature range from -55°C up to +150°C

Thermal resistance is provided for the CD2520FC series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

Please note that during soldering of all CD resistors from Caddock, the soldering temperature profile must not cause the pedestal terminals of this device to exceed +220°C.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2).

The below table gives the available specifications for the complete CD FC series including the CD2520FC:

Caddock CD FC Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CD2520WBA Series

The CD2520WBA low resistance precision wire-bondable surface-mount resistor series from Caddock offers resistance values from as low as 0.01Ω up to 0.2Ω making it ideal for current sensing applications. The CD2520WBA series features a unique pedestal terminal design for surface-mount applications as well as low inductance of 5nH (typical) which provides excellent high frequency and pulse response, with high pulse handling and overload capabilities. The WBA variant of the CD series from Caddock is a hybrid mountable version with copper pedestal terminals and an aluminium surface layer for wire-bonding utilising aluminium wire and a metallised back surface for solder attachment of the back surface to a heat sinking substrate.

  • Low resistance precision wire-bondable resistor
  • Wire-bondable version for hybrid applications (WB)
  • 2520 chip size
  • Resistance values from 0.01Ω to 0.2Ω
  • Pedestal terminal design helps maintain precision and its copper core provides heat spreading which enhances the high power handling capabilities
  • Bare ceramic back surface
  • High pulse handling and overload capabilities
  • Low inductance of 5nH (typical) provides excellent high frequency and pulse response
  • Tolerance of ±1.0%
  • TCR from as low as 0 to +100 ppm/°C (resistance values of 0.05Ω up to 0.2Ω)
  • Operating temperature range from -55°C up to +150°C

Thermal resistance is provided for the CD2520WBA series to optimise high power designs when utilising higher thermal conductivity circuit board substrates such as IMS or Alumina. Please see datasheet for further details.

Please note that during soldering of all CD resistors from Caddock, the soldering temperature profile must not cause the pedestal terminals of this device to exceed +220°C.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2).

The below table gives the available specifications for the complete CD WBA series including the CD2520WBA:

Caddock CD WBA Specifications

Please see datasheet for notes relating to the power capabilities.

£0.00 Ex Tax: £0.00

Caddock CHR2520FC Series

The CHR2520FC high resistance precision flip-chip surface-mount resistor series from Caddock offers resistance values from 10MΩ up to 100MΩ. These high resistance precision chip resistors are designed for use in extremely low signal detection / amplification circuits. The CHR2520FC series features solderable metallised termination pads on one side of the substrate, the same side as the resistive element, with the back side of the substrate being bare ceramic.

  • High resistance precision flip-chip resistor
  • Flip-chip version for surface-mount applications (FC)
  • 2520 chip size
  • Resistance values from 10MΩ to 100MΩ
  • Bare ceramic back surface with metallised terminations pads on the same side as the resistive element
  • Tolerance of ±1.0%
  • TCR from as low as ±25 ppm/°C (from 10MΩ up to 25MΩ, between -40°C and +85°C)
  • Operating temperature range from -40°C up to +85°C

Typical applications for the CHR2520FC high resistance precision flip-chip resistor series include:

  • Photodiode signal amplification
  • Photomultipliers
  • Ionisation detection
  • Input resistor for high impedance voltage division

Customisations are available upon request, please see the ordering information tab for available standard resistance values and part number break down as well as the list of customisable options.

The recommended solders for flip-chip solder attachment are Sn (62) / Pb (36) / Ag (2), Sn (96.5) / Ag (3.5) or standard Sn / Ag / Cu solder alloys.

The below table gives the available specifications for the complete CHR2520FC series:

Caddock CHR2520FC Specifications

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Caddock HVD Series

The HVD ultra-precision high voltage divider series from Caddock offers ultra-precision performance in the range of 1.5kVDC to 5kVDC, with a ratio tolerance of ±0.05% and ratio TCR of ±5 ppm/°C. The HVD series offers RT values of between 10MΩ and 50MΩ as well as ratios (RT:R2) of 100:1 and 1,000:1. They are monolithic voltage dividers built with ceramic sandwich construction.

  • Through-hole ultra-precision voltage divider
  • 6 standard models of the HVD series
  • Ratios (RT:R2) of 100:1 and 1000:1
  • Total resistance values (R1+R2) from 10MΩ to 50MΩ
  • Monolithic voltage dividers built with ceramic sandwich construction
  • Continuous operating voltage from 1.5kVDC up to 5kVDC
  • Over-voltage of 1.5 times rated voltage for 5s
  • Absolute tolerance of ±0.1% with ratio tolerance (RT:R2) of ±0.05%
  • Absolute TCR of ±30 ppm/°C with ratio TCR (RT:R2) of ±5 ppm/°C
  • Operating temperature range from -40°C up to +85°C

These Caddock HVD dividers are ideal for high performance voltage division applications in medical equipment, laboratory equipment, analytical instruments.

Customisations are available upon request for high quantity applications (greater than 1000 per year). Customisations include custom voltage division ratios and ratio specifications that optimise the performance and cost for your application.

The below table gives the available specifications and parts available for the complete HVD series:

Caddock HVD Specifications

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Caddock LC2000 Series

The LC2000 transient tolerant precision resistor network series from Caddock is available with standard and custom resistor pairs, all with precision ratio tolerance options of ±0.25%, ±0.5% and ±1.0%.

  • Telephone line interface resistors for telephone line card applications
  • Lightning transient handling while maintaining precision ratio tolerance
  • Quick fail-safe performance when exposed to cold start voltages of 120VAC, 240VAC, or 600VRMS AC. Protecting telephone system wiring from damage or ignition.
  • Available with optional spring thermal cutoff protection, mounted on the resistor network substrate. When excessive low voltage power cross causes excessive heating in the resistor network, the spring thermal cutoff opens the circuit and protects the circuit board from heat damage or ignition.
  • Available with optional thermistor temperature sensing element for controlling a relay circuit which disconnects the excessive low voltage overload, protecting the circuit board from heat damage.
  • Standard resistance pairs available 24Ω, 30Ω, 40Ω, 50Ω, 100Ω, and 200Ω (Custom values also available upon request)
  • Precision ratio tolerance of ±0.25%, ±0.5%, or ±1.0%
  • Operating temperature range from -40°C up to +85°C

Product drawings for the product which meets the needs of your application are available upon request. Each product drawing describes how each network is designed to meet the applicable requirements of GR-1089-CORE and ITU-T K.20.

Custom precision resistor network configurations that can best meet your needs are available upon request. Please contact us with your requirements.

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