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Here at Rhopoint Nordic we can offer a range of through hole (THT) and surface-mount (SMD) resistor networks and voltage dividers by industry leading manufacturers Alpha Electronics, Caddock and Ohmcraft. With flexible circuit design options, range of tolerances and ratings, we can help find the right resistor network for your project. Our range includes high voltage dividers and high precision, current sensing, high and low ohmic resistor networks, including fully customisable solutions.
Can't find what you're looking for? Contact us, we can often offer customised solution to meet all your needs.
The MU ultra-precision resistor 1-2-3 network series from Alpha Electronics offers a 3 terminal, 2 element resistor network in a small surface-mount package. Each resistive element can range from 10Ω up to 20kΩ all with tight tolerances down to +0.02% absolute and +0.01% matching (1kΩ to 20kΩ). By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce this resistor network series with low temperature coefficients (both absolute and tracking) as well as excellent long-term stability. The Alpha MU series J-lead terminals provide flexibility once the parts are soldered to the board compared to standard fixed surface-mount resistors.
The MU surface-mount, ultra-precision resistor 1-2-3 network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
Alpha's MU resistor network series are ideal for use in input and feedback resistors for amplifiers due to both the input and feedback resistors being incorporated into the same package, therefore amplification is not affected by temperature change.
The below table gives a summary of the specifications and options available for the Alpha MU series:
* Symbols parenthesized are for part number composition
** Please contact us for resistance availability
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The SC case-encapsulated precision resistor network series from Alpha Electronics is fully customisable and offers excellent performance in TCR tracking, resistance ratio matching and stability thanks to Alpha's Bulk Metal® foil resistor technology. The SC ultra-precision resistor network series can offer up to a maximum of 10 resistive elements. Each resistive element can range from 30Ω up to 120kΩ all with tight tolerances, both absolute and matching, down to +0.01% (the maximum total resistance for the network is 1,200kΩ).
The SC case-encapsulated, through-hole, ultra-precision resistor network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
These resistors are fully customisable including the circuit layout. There are 5 standard circuit types available to choose from:
Pin pitch for the Alpha SC series will be in multiples of 2.54mm.
The below table gives a summary of the specifications and options available for the Alpha SC series:
* TCR tracking is dependent on resistance ratio, please see Table 1
** Symbols parenthesized are for part number composition
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The SE conformally coated precision resistor network series from Alpha Electronics is fully customisable and offers excellent performance in TCR tracking, resistance ratio matching and stability thanks to Alpha's Bulk Metal® foil resistor technology. The SE precision resistor network series can offer up to a maximum of 5 resistive elements. Each resistive element can range from 30Ω up to 120kΩ all with tight tolerances down to +0.05% absolute and +0.01% matching (the maximum total resistance for the network is 600kΩ).
The SE conformally coated, through-hole, precision resistor network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
These resistors are fully customisable including the circuit layout. There are 4 standard circuit types available to choose from:
Pin pitch for the Alpha SE series will be in multiples of 2.54mm.
The below table gives the full specifications for each resistor model available including the Alpha SE series:
* TCR tracking is dependent on resistance ratio, please see Table 1
** Symbols parenthesized are for part number composition
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The SF conformally coated precision resistor network series from Alpha Electronics is fully customisable and offers excellent performance in TCR tracking, resistance ratio matching and stability thanks to Alpha's Bulk Metal® foil resistor technology. The SF precision resistor network series offers 2 resistive elements. Each resistive element can range from 30Ω up to 120kΩ all with tight tolerances down to +0.05% absolute and +0.01% matching (the maximum total resistance for the network is 240kΩ).
The SF conformally coated, through-hole, precision resistor network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
These resistors are fully customisable including the circuit layout. There are 2 standard circuit types available to choose from:
Pin pitch for the Alpha SF series will be in multiples of 2.54mm.
The below table gives the full specifications for each resistor model available including the Alpha SF series:
* TCR tracking is dependent on resistance ratio, please see Table 1
** Symbols parenthesized are for part number composition
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The SLD conformally coated ultra-precision resistor 1-2-3 network series from Alpha Electronics offers a 3 terminal, 2 element resistor network in a small through-hole package. Each resistive element can range from 50Ω up to 30kΩ all with tight tolerances down to +0.05% absolute and +0.02% matching (100Ω to 30kΩ). By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce this resistor network series with low temperature coefficients (both absolute and tracking) as well as excellent long-term stability. The Alpha SLD series offers three pins with a standard pin pitch of 2.54 ±0.25mm.
The SLD through-hole, ultra-precision resistor 1-2-3 network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
Alpha's SLD resistor network series are ideal for use in input and feedback resistors for amplifiers due to both the input and feedback resistors being incorporated into the same package, therefore amplification is not affected by temperature change.
The below table gives the full specifications for each resistor model available including the Alpha SLD series:
* Symbols parenthesized are for part number composition
** Please contact us for resistance availability
TCR is from -25°C to +125°C for SLD Type
£0.00 Ex Tax: £0.00
The SM transfer moulded ultra-precision resistor 1-2-3 network series from Alpha Electronics offers a 3 terminal, 2 element resistor network in a small through-hole package. Each resistive element can range from 10Ω up to 30kΩ all with tight tolerances down to +0.02% absolute and +0.01% matching (50Ω to 30kΩ). By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce this resistor network series with low temperature coefficients (both absolute and tracking) as well as excellent long-term stability. The Alpha SM series offers three pins with a standard pin pitch of 2.54 ±0.25mm.
The SM through-hole, ultra-precision resistor 1-2-3 network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
Alpha's SM resistor network series are ideal for use in input and feedback resistors for amplifiers due to both the input and feedback resistors being incorporated into the same package, therefore amplification is not affected by temperature change.
The below table gives the full specifications for each resistor model available including the Alpha SM series:
* Symbols parenthesized are for part number composition
** Please contact us for resistance availability
TCR is from -25°C to +125°C for SLD Type
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The SS conformally coated precision resistor network series from Alpha Electronics is fully customisable and offers excellent performance in TCR tracking, resistance ratio matching and stability thanks to Alpha's Bulk Metal® foil resistor technology. The SS precision resistor network series can offer up to a maximum of 5 resistive elements. Each resistive element can range from 30Ω up to 20kΩ all with tight tolerances down to +0.05% absolute and +0.01% matching (the maximum total resistance for the network is 100kΩ).
The SS conformally coated, through-hole, precision resistor network series exhibits excellent high frequency characteristics thanks to Alpha's Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
These resistors are fully customisable including the circuit layout. There are 5 standard circuit types available to choose from:
Pin pitch for the Alpha SS series will be in multiples of 2.54mm.
The below table gives the full specifications for each resistor model available including the Alpha SS series:
* TCR tracking is dependent on resistance ratio, please see Table 1
** Symbols parenthesized are for part number composition
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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.
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.
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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.
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.
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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.
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:
For a custom 1789 resistor network, please contact us with any requirements and our technical team will assist you.
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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.
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:
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The T1794 series from Caddock are custom low temperature coefficient precision SIP resistor networks, with a resistance range from 500Ω to 50MΩ. These resistors have an absolute tolerance range of between ±0.025% and ±1.0% and a ratio tolerance of between ±0.01% and ±1.0%. The absolute TCR (from -40°C to +85°C) values are: ±15 ppm/°C, ±25 ppm/°C, ±50 ppm/°C and the ratio TCR (from -40°C to +85°C) values are: ±10 ppm/°C, ±25 ppm/°C and ±50 ppm/°C. The Caddock T1794 series unique thin-profile, single-in-line edgemount package design allows the wide range of flexibility necessary to blend the performance of Tetrinox® resistance technology with particular circuit specifications to arrive at the final network package size, pin spacing and pin style.
Applications for the Caddock T1794 custom low TC precision SIP resistor networks include:
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The T912 series from Caddock are resistor pairs and quads with ratio characteristics for precision analog circuits, with a resistance range from 1kΩ to 1MΩ. These resistors have an absolute tolerance of ±0.1% and a ratio tolerance from ±0.01% to ±0.1%. The absolute TCR (from -40°C to +85°C) values are: ±15 ppm/°C, ±25 ppm/°C, ±50 ppm/°C, and the ratio TCR (from -40°C to +85°C) values are: ±10 ppm/°C, ±25 ppm/°C and ±50 ppm/°C. The Caddock T912 series are constructed using the Tetrinox® resistance technology, in addition to the 14 standard equal value models of the Type T912 and T914, they can also be ordered with resistance ratios of 10:1, 9:1 or 1:1.
The Caddock T912 precision resistor networks achieve the precise ratio performance and stability required by
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The T914 series from Caddock are resistor quads with ratio characteristics for precision analog circuits, with a resistance range from 1kΩ to 1MΩ. These resistors have an absolute tolerance of ±0.1% and a ratio tolerance from ±0.01% to ±0.1%. The absolute TCR (from -40°C to +85°C) values are: ±15 ppm/°C, ±25 ppm/°C, ±50 ppm/°C, and the ratio TCR (from -40°C to +85°C) values are: ±10 ppm/°C, ±25 ppm/°C and ±50 ppm/°C. The Caddock T914 series are constructed using the Tetrinox® resistance technology, in addition to the 14 standard equal values for the 2 resistor elements with a ratio of 1:1
The Caddock T914 precision resistor networks achieve the precise ratio performance and stability required by
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The THV10 series from Caddock are precision high voltage divider networks, have a voltage rating of 10KVDC, with a total resistance of 100MΩ across the 2 resistors and a voltage division ratio of 1,000:1 or 100:1. They have a tighter ratio TCR and ratio tolerances than with standard high voltage divider product, The THV10 series introduces Caddock's advanced high voltage resistor technology which doubles the allowable working voltage over the length of the high voltage section. This technology combines Caddock's Tetrinox® resistance films with a patented laser generated V-Notch Geometry which optimizes the voltage gradient over the length of the resistance pattern.
These specifications can provide important improvements in performance in many types of advanced electronic systems, including:
The below table gives the specifications available for the complete THV resistor series including the THV10 model:
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