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Rhopoint Nordic was established over 10 years ago as a distributor of precision resistors and passive electronic components have formed a core of the company ever since, although our portfolio has grown considerably. Apart from vast range of resistors in virtually any resistance rating, we also offer a selection of thermistors and inrush current limiters, capacitors, digital isolators, high quality reed relays including the high voltage options, reed switches and products based on the reed switch technology such as flow and float switches for liquid level management, and much more.
We have long standing relationships with most of our carefully selected manufacturing partners, to ensure that our customers only receive quality components suitable for long term designing-in. Our sales engineers all have background in electronics and working knowledge of the electronic components, reinforced by regular training from the manufacturers themselves, so our in-house knowledge is always up to date. That is why we can speak to the design engineers and help them find, price and design-in a solution for their application.
We understand that reading through endless datasheets and looking for an off-the-shelf component that will tick all the boxes is a tedious task. Our team can help whatever your application - they can not only propose a suitable existing model where available, but also offer customised solutions. Majority of our manufacturing partners are able to customise their standard products at no, or very little, extra cost - whether a custom resistance rating, TCR, VCR or tolerance values, lead length or terminations.
Browse below or Contact us for more information.
The ADR 1-dial resistance box series from Alpha Electronics offers a range of standard resistors which are ideally suited for repetitive daily work. The single dial system means the resistance is easily switched from one value to another. This greatly improves work efficiency and helps to avoid mistakes, which may happen when using a 6-dial decade standard resistor. They are ideally suited for RTD simulation for platinum (Pt) related products and conductive meters.
The resistance elements utilise Bulk Metal® Foil technology and the connections to the rotary switch are made by using 4-terminal junctions. This ensures that high precision, high stability and low temperature coefficients are achieved.
The ADR-1xxx 1-Dial resistance box is fully customisable. Up to 24 different resistance values can be set into the box.
The ADR-1xxx series has a weight of approximately 1kg and dimensions of 100mm x 150mm x 80mm.
The below table gives the full specifications available for the Alpha ADR 1-dial resistance box series:
Tolerance and temperature coefficient varies with resistance values.
£0.00 Ex Tax: £0.00
The ADR 6-dial decade resistance box series from Alpha Electronics, with 6½ digit readings, features ultra precision resistors, low contact resistance rotary switches, low thermal EMF output terminals and the double shielded construction. There are 5 models of the ADR 6-dial decade resistance box available, each offering different resistance ranges starting from 0.1Ω minimum to 1.111210KΩ maximum up to 10Ω minimum to 11.11110MΩ maximum.
All resistors used in this Decade Resistance Box are from the ultra precision Bulk Metal® Foil resistors manufactured by Alpha Electronics, assuring high stability over time and environment change.
The rotary switches have very low contact resistance which is achieved by connecting three clip-type contacts in parallel. This method also ensures a higher mechanical reliability. Low thermal EMF output terminals use a low thermal resistance rectangular wire circuit configuration. A double shielded construction inhibits interference of environmental noise.
The ADR 6-dial resistance box series has a weight of approximately 4.5kg and dimensions of 430mm x 140mm x 99mm.
The below table gives the full specifications for each model available of the Alpha ADR 6-dial decade resistance box series:
£0.00 Ex Tax: £0.00
The ASR series from Alpha Electronics is an extremely stable standard resistor. It utilises their Ni/Cr alloy Bulk Metal® Foil technology for the resistive elements, which helps provide high stability and a low temperature coefficient. With the extreme stability of this resistor relative to temperature change, the ASR can be used in air without the need of an oil bath or critical environmental temperature control, eliminating added operation and maintenance costs.
Due to Alpha Electronics long-term experience in developing and enhancing ultra-stable Bulk Metal® Foil technology, they are able to provide products with consistency of performance under strict quality control. The ASR is designed to be used in a wide range of environments; from making precise measurements on the production floor, to providing corporate traceability as a calibration and reference standard.
The resistors are mounted within a compact and sturdy box. A cover is provided to protect the resistors and connection terminals from damage during transport and storage.
The ASR series has a weight of approximately 2.5kg and dimensions of 155mm x 97mm x 112mm.
The below table gives the full specifications for each model available of the Alpha ASR series:
* Power = Power rating.
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The ATS series from Alpha Electronics is a resistance transfer standard used to calibrate working standard resistors by using a primary resistor. The ATS series consists of 10 high precision resistors of the same nominal value (R) which are connected in series known as Haymon bridge construction. The ATS unit can be used as a standard resistor due to the low temperature coefficient and high stability features of Alpha Electronics Bulk Metal® foil technology, ensuring very tight matching accuracy.
The ATS-LC lead compensator and the ATS-SC shorting bar are available as additional options.
The ATS series has a weight of approximately 3kg and dimensions of 180mm x 70mm x 332mm.
The below table gives the full specifications for each model available of the Alpha ATS series:
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The ATV series from Alpha Electronics is a current / voltage (I/V) conversion adaptor used to accurately measure current using a voltage meter. Its small, lightweight construction enables it to be easily attached directly to a voltage meter for ease of operation.
Each model corresponds to a set resistance value and maximum working current.
The below table gives the full specifications for each model available of the Alpha ATV series:
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The CLA ultra-precision thermosensitive resistor series from Alpha Electronics offers a highly accurate device that has a resistivity which varies linearly with temperature change in a through-hole package. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce these resistors that are ideally designed for temperature detection, providing a small size and rapid response.
These Alpha CLA ultra-precision thermosensitive resistors are made of material only a few µm thick and respond rapidly to temperature changes. Strict control of foil composition maintains uniform quality without fluctuation of temperature characteristics of resistance. They are produced by the same fine photo-etching technology used in other metal foil precision resistors from Alpha.
The CLA series has a pin pitch of 2.54 ±0.25mm.
Typical applications for the CLA ultra-precision thermosensitive resistor series include:
The below table gives the full specifications for each resistor model available including the Alpha CLA series:
* Symbols parenthesized are for part number composition
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The CLB ultra-precision thermosensitive resistor series from Alpha Electronics offers a highly accurate device that has a resistivity which varies linearly with temperature change in a through-hole package. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce these resistors that are ideally designed for temperature detection, providing a small size and rapid response.
These Alpha CLB ultra-precision thermosensitive resistors are made of material only a few µm thick and respond rapidly to temperature changes. Strict control of foil composition maintains uniform quality without fluctuation of temperature characteristics of resistance. They are produced by the same fine photo-etching technology used in other metal foil precision resistors from Alpha.
The CLB series has a pin pitch of 2.54 ±0.25mm.
Typical applications for the CLB ultra-precision thermosensitive resistor series include:
The below table gives the full specifications for each resistor model available including the Alpha CLB series:
* Symbols parenthesized are for part number composition
£0.00 Ex Tax: £0.00
The CSR working standard resistor series from Alpha electronics uses Bulk Metal® foil resistance elements, which have the same excellent stability and low temperature coefficient of resistance as the ASR series. Alpha's Bulk Metal® foil offers a precision that cannot be matched by any other resistance material. The CSR series can be customised to any resistance value from 0.001Ω up to 100MΩ.
The CSR is designed for equal ease of use either in laboratory conditions or on the production floor. The construction of the CSR series is designed to give ease of transport and storage, and can be used in normal air environments without the need for oil bath submersion.
The CSR series has a weight of approximately 300g and dimensions of 100mm x 65mm x 66.5mm.
The below table gives the full specifications for each model available of the Alpha CSR series:
£0.00 Ex Tax: £0.00
The EP ultra-precision resistor series from Alpha Electronics offers highly stable wire-bondable resistors with a maximum resistance up to 30kΩ. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha EP resistors offer similar specifications to the Alpha MP and MQ resistor series in terms of power ratings, tolerances and resistance values available but are wire-bondable variants.
These ultra-precision, highly stable resistors are ideal for precision hybrid applications such as A/D hybrids.
The below table gives the full specifications for each resistor model available including the Alpha EP series:
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The EQ ultra-precision resistor series from Alpha Electronics offers highly stable wire-bondable resistors with a maximum resistance up to 60kΩ. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha EQ resistors offer similar specifications to the Alpha MP and MQ resistor series in terms of power ratings, tolerances and resistance values available but are wire-bondable variants.
These ultra-precision, highly stable resistors are ideal for precision hybrid applications such as A/D hybrids.
The below table gives the full specifications for each resistor model available including the Alpha EQ series:
£0.00 Ex Tax: £0.00
The FLA conformally coated resistor series from Alpha Electronics offers a very precise resistor with a resistance range from 10Ω up to 100kΩ all in a small through-hole package. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha Electronics FLA precision resistor series have been designed with terminals that are easy for insertion into the PCB.
The FLB series has a pin pitch of 2.54 ±0.25mm.
Alpha's Bulk Metal® foil resistor technology means that these conformally coated, through-hole, precision resistors are ideal for precision measurements, also their low inductance makes them ideal for use at higher frequencies.
The below table gives the full specifications for each resistor model available including the Alpha FLA series:
* Symbols parenthesized are for part number composition
✝ Resistance figures are the values obtained by measuring at the point 2.5 ±1.0mm below the shoulder of the leads
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The FLB conformally coated resistor series from Alpha Electronics offers a very precise resistor with a resistance range from 10Ω up to 150kΩ all in a small through-hole package. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha Electronics FLB precision resistor series have been designed with terminals that are easy for insertion into the PCB.
The FLB series has a pin pitch of 2.54 ±0.25mm.
Alpha's Bulk Metal® foil resistor technology means that these conformally coated, through-hole, precision resistors are ideal for precision measurements, also their low inductance makes them ideal for use at higher frequencies.
The below table gives the full specifications for each resistor model available including the Alpha FLB series:
* Symbols parenthesized are for part number composition
✝ Resistance figures are the values obtained by measuring at the point 2.5 ±1.0mm below the shoulder of the leads
£0.00 Ex Tax: £0.00
The FLC conformally coated resistor series from Alpha Electronics offers a very precise resistor with a resistance range from 10Ω up to 200kΩ all in a small through-hole package. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha Electronics FLC precision resistor series have been designed with terminals that are easy for insertion into the PCB.
The FLC series has a pin pitch of 5.08 ±0.25mm.
Alpha's Bulk Metal® foil resistor technology means that these conformally coated, through-hole, precision resistors are ideal for precision measurements, also their low inductance makes them ideal for use at higher frequencies.
The below table gives the full specifications for each resistor model available including the Alpha FLC series:
* Symbols parenthesized are for part number composition
✝ Resistance figures are the values obtained by measuring at the point 2.5 ±1.0mm below the shoulder of the leads
£0.00 Ex Tax: £0.00
The FNP high power precision shunt resistor series from Alpha Electronics offers a range of very high precision current sensing shunts with a maximum power rating of 500W on a suitable heat sink at +25°C. By utilising a Ni-Cr Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients. The FNP shunt resistor series has a built in Pt100 sensor for monitoring the temperature of the resistive element.
The Alpha Electronics FNP precision shunt resistor series are constructed out of the following materials:
Alpha's Ni-Cr Bulk Metal® foil resistor technology means these high power precision shunt resistors resistors are ideal in applications like:
The below table gives a summary of the specifications and options available for the Alpha FNP series:
* Keep temperature of the resistive element surface less than +125°C
** Please contact us for higher resistance values
£0.00 Ex Tax: £0.00
The HC resistor series from Alpha Electronics offers their ultra-precision resistor capabilities in a hermetically sealed package. With a resistance range from 1Ω up to 120kΩ all in a small through-hole package with a pin pitch of 3.81 ±0.25mm. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to produce resistors with low temperature coefficients and excellent long-term stability.
The Alpha Electronics HC hermetically sealed ultra-precision resistor series have been designed with longer leads to ensure the correct clearance from the PCB is achieved when soldering. It is advised that the resistors are kept over 10mm away from the board surface by using an insulating tube.
The below table gives a summary of the specifications available for each resistor model including the Alpha HC series:
* Symbols parenthesized are for part number composition
✝ Resistance figures are the values obtained by measuring the leads at point 12.7 ±3.2mm away from the base for type HC and HD, but, in case of resistance below 10Ω, the value at 1.6 ±0.6mm away from the base for all types
** Temperature characteristic Z is applicable for temperature range between 0°C and +60°C
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