What is the material used for the element in the RH050R0800FE02 resistor? The data sheet mentions copper-nickel alloy or Nickel-chrome alloy, according to the resistance. Resistance - 80 mOhms?
rhnh.pdf (197.7 KB)
Thank you
Hello p.wijethunga,
Welcome to the DigiKey TechForum
I did not find anything mentioning which materials are used in the element of this resistor.
Nothing in the datasheet, and I did not find anything about it on the manufacture’s website.
You can contact the manufacture directly for this request.
The datasheet has the email address for technical questions, which is ww2aresistors@vishay.com.
They can verify the materials on the internal element.
I see the mention of the wire material on page 4 of the datasheet, but they do not specify where they transition from copper-nickel to nickel-chrome.
As copper-nickel has a lower resistance per unit length, and considering that the RH050R0800FE02 is very much on the low end of the range of the values offered, it is likely using copper-nickel, but I have no information to confirm this.
As @David_1768 suggests, an email to Vishay is probably your best bet to get a definitive answer, though I wouldn’t be surprised if it’s not easily obtainable by their technical staff either, since the important thing from their perspective is that the resistor meets the specs that they provide in their datasheet.
P.S. - I also found the following URL on the Vishay website to ask tech questions on the RH, NH series, specifically.