Riedon Company Blog

Riedon goes “green” in renewable energy applications with low-cost DC current shunts rated up to 1200 A

We are pleased to announce that our new product line is now available to purchase from Digikey.  Please check here for the stock list: We can cross to Deltec, Empro and Canadian shunts.  Our shunts are ROHS complaint, UL listed and price competitive.


Lowest cost Precision Current shunt resistors / DC Current Shunt resistors / DC ammeters in the market

DC Ammeter shuntRiedon is introducing a range of UL listed, RoHS-compliant, precision current shunts resistors designed for DC ammeters and similar instruments. The RS Series of off-the-shelf, base-mounted shunts resistors offers current ratings from 5A to 1200A and combine low cost with the industry’s shortest lead-times while Riedon’s custom design capability caters for more unique requirements. These devices are targeted at applications in the renewables energy market, such as solar arrays, wind turbines, and battery chargers for energy storage e.g. in electric vehicles, as well as other uses in heavy industry, electroplating and mining. Click here to continue             http://www.riedon.com/media/pdf-tech/DC_Ammeter_Shunts.pdf


DC Ammeter Shunt resistors – Riedon’s New Product


Sneak peak into our new product line release.
DC Current Shunts


Riedon’s cost effective Precision Resistors product line

Riedon’s precision resistors are designed for critical applications that require very accurate and stable resistance values. Precision resistors are normally specified when the wattage requirements are relatively low, and when high accuracy and stability are necessary. They are available in a subminiature series, the standard 100 series, and special low-reactance version for fast rise time applications.

These precision resistors are non-inductively wound on molded bobbins. The solderable and weldable leads are tinned copper. Internally, they are welded for highest precision and reliability. All precision resistors are aged to insure stability. A protective coating insulates the windings and protects the welds. The bobbin is encapsulated using a specially formulated epoxy so temperature expansion coefficients of all materials are closely matched.

For more information click here.


Power Wirewound Resistors

When modern circuits need power resistors, the choice is often wirewound. Today's wire-wound resistors are rugged and reliable. They are small and compatible with modern PC-board and surface mount manufacturing systems. And, new technology resistors still fall short of wire-wounds. Look at the chart: although metal foil technology is a close second to wirewounds, other technologies are generally unable to measure up in power rating, tolerance and TCR.

power resistors



From Joule-rated devices for energy absorption to
miniaturized components for current temperature
sensing, wirewound resistors continue to offer
significant advantages over alternatives in many

click here to see our published whitepaper for high pulse/ Joule rate resistors.




Riedon Resistors Win With Boeing



After years of comprehensive test & evaluation, Riedon's custom designed  resistor has been selected in a  proximity sensor product line which will be used on the Boeing 737 NG (Next-Generation) family of aircraft .

These sensors are used in various applications including landing gear, doors, and flight controls.


The 737 NG is part of the 737 family which has been the most successful commercial aircraft of all time with over 10,000 aircraft delivered or on order.

The 737 represents more than 25% of the worldwide fleet of large commercial jet airliners.


500 amp current sense resistors

Riedon goes green in renewable energy applications  with low cost DC Current Shunts rated up to 1200A


Non-Magnetic Resistors & High-Temperature Applications

Non-Magnetic Resistors

Riedon's non-magnetic resistors like our CBR series and CHR seriesare appropriate for Medical applications such in the field of magnetic-resonance (MRI) and computer tomography (CT), where electronic circuits are located in high magnetic fields. The resistor contact areas do not contain Nickel, they are made of metal alloys based on PtAg and PtPdAg, and available as thick film pastes, which are applied by roller-coating or dipping processes onto the wrap-around areas of the chip components and fired in the range of 850ºC.

The standard SMD soldering processes can be used, but these resistors are also suited for contact processes using silver-based conductive epoxy. The contact-technique of conductive epoxy is used mainly in applications where soldering techniques cannot be applied by technical reasons like the usage of temperature-sensitive components which would be affected by high soldering temperatures, or the usage of unpackaged semiconductors on the same board.

Also, another advantage of our non-magnetic thick film chip resistors with PtAg or PtPdAg contacts is suitability for applications at higher temperatures than the typical maximum temperature of 155ºC. These resistors contain no organic material and no tin or tin-lead layers, and the firing temperatures for the resistive and conductive layers are in the temperature range of 850ºC. Due to these reasons such resistors will have no substantial change of their properties and stability all the way up to 300ºC.


Riedon appoints new General Manager!

Riedon, a specialist manufacturer of cutting-edge resistive solutions, is pleased to announce the hiring of Greg Wood as the new Senior VP and General Manager, effective from January 2, 2014. Greg will report to Riedon owners, Michael Zoeller and Duane Ebbert.

Greg has a BSBA in Production and Operations Management from San Diego State, an MBA from the University of Redlands and comes to Riedon with experience and a proven track record of success in the management, development and manufacture of technical products. Greg’s most recent manufacturing position was as President and CEO of Surfx Technologies, a manufacturer of atmospheric plasma systems for the medical device, semiconductor, aerospace and industrial markets. Prior to Surfx, Greg was the President, CEO, and CFO of Emergent Respiratory Products, a medical device company. In an earlier position, Greg was President and CFO of American Microwave Technology, an RF power amplifier manufacturer.