Electronics > Metrology

What brand precision BMF resistor is this? What Can I Build?

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denimdragon:
I had a datasheet on these but I have since then misplaced it  :palm:

Does anyone know what brand this is? I recall that they had been bought
out by Vishay a while back. They are spec'd pretty good. I have tons,
but only one value 3118 ohms. I would also love any suggestions of
what piece of precision test gear I could make. A nice voltage divider
comes to mind  :popcorn:

denimdragon:
So, no one who has viewed this thread, is familiar with this
resistor brand?

 :-//

Well, I have been logging them with my 34970A and my freshly
Cal'D (  :-DMM :-+ yeap, I have been bitten by the v-n bug) 34401A
over a 6 hour period @ 24°C ±2°C (no RH yet, but the lab is located
at the highest part of the house so...) and they have performed extremely
well (≅<1ppm/°C).

Maybe I have posted this in the wrong forum. Mods, let me know.

 :popcorn:
 

Victorman222:
My google-fu lead me to Wilbrecht ledco. Check out:
https://web.archive.org/web/20120108085924/http://www.wilbrechtledco.com/produits/foil.html
Luckily even the datasheets are archived.

trobbins:
Hammon dividers and bridge always need good precision resistors, and you could go the next level and sort what you have for value and tempo.

donlisms:
Three of them in series plus 646 ohms makes 10k. I don't know what that might mean, but it seems interesting.

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