Low ohmic value resistors target low-cost current sensing

5th November 2013
Source: Riedon Inc
Posted By : Nat Bowers
Low ohmic value resistors target low-cost current sensing

Targeting the demanding requirements of current sensing and shunt applications, Riedon offers a comprehensive portfolio of low ohmic value resistors. This portfolio ranges from the economical bare metal element MSR series through to its CLSA series chip resistors that provide AEC-Q200 compliance for use in harsh automotive environments.

Offered in various package formats, Riedon resistors provide ±1% tolerance resistances from 0.5 milliohms up to 1 ohm, TCRs as low as ±20ppm/oC and power ratings up to 5 Watts. For tolerances down to ±0.1%, Riedon is also able to supply four terminal versions of its axial lead low ohm power resistor.

Using a bare metal element in an all-welded construction for through-hole circuit board mounting, the MSR series provides resistance values from 5mΩ to 100mΩ, while also achieving low inductance (<10nH) and low TCR (±20ppm/oC). Available in 1, 3 and 5-Watt power ratings MSR resistors feature tolerances of ±1% or ±5%.

Phil Ebbert, Riedon’s VP of Engineering, comments: "Resistance values of just a few milliohms allow currents of several Amps, even tens of Amps, to be handled with device power ratings up to 5 Watts. Riedon’s capability to produce such low ohmic values, with well defined tolerances, enables it to serve a wide range of current sensing and shunt resistor applications.”

Riedon offers several chip resistor solutions for surface mount applications. Providing excellent long-term stability and low inductance, the MNRS chip shunt resistors feature 4- and 6-Watt ratings and resistances from 1mΩ to 4mΩ. Ultra-low ohm metal strip chip resistors, the CSR family come in three sizes (1206 / 2010 / 2512) for power ratings from 1 to 3 Watts, with standard and customized resistance values from 0.5 mΩ to 15mΩ. Operating over -55oC to +155oC, the CLS/CLSA series chip resistors feature an alumina substrate for high power dissipation, with the CLSA parts meeting the Automotive Engineering Council’s AEC-Q200 stress test qualification.


You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Sensor+Test 2019
25th June 2019
Germany Nürnberg Messe
The Digital Healthcare Show 2019
26th June 2019
United Kingdom EXCEL, London
unbound london 2019
17th July 2019
United Kingdom Old Truman Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover