Resistor Question

[woody]

I found a couple of resistors I don't know the power rating on
they are marked RN75C and made by ACI. Could some one
enlighten me on the RN75C rating.

Thanks in advance,

bob12345678

 

[roddyama]

Hi Bob,

Here’s a link to the Vishay/Dale data sheet for RNx… resistors. It has what you’re looking for. These are metal film, mil-spec resistors.

http://www.vishay.com/document/66001/66001.pdf

Rodd Yamas***a

 

[woody]

Rodd,

Thanks for the link. It did answer all my questions.

bob12345678

 

[redrabbit]

(New-Old Thread) 😕

I too have aquired some RN75c 's , but that Dale/Vishay link is dead, and could not find any info on wattage.

What is the method for testing resistor wattage?

I have some:
"IRC" MEF1% RN75c 27.4k (watts??)

=RR=

 

[poobah]

RN75 = 1.5Watt @70 deg C, 1.0Watt @ 125 deg C,

 

[Tweeker]

Resistors, Fixed, Film, Nonestablished Reliability, Established Reliability, and Space Level, Style RNC75

6.3 Power rating at 70°C. Resistors furnished to this specification have completed 2,000 hours of testing at 70°C and power rating of 2.0 watts; however, the failure rate level specified is established at 1 watt at 125°C. User should consider the FR level as assigned only to the 125°C temperature.