Obscure resistor, what is it?

[jan.didden]

Originally Posted by AndrewT

blue silver for the first two digits does not make sense.
It appears to be brown (1) black (0) gold ( *0.1) silver (10%).
I cannot explain the blue banding. temp coef (unlikely) fusible (don't know).
I would guess a carbon composition 1r0+-10% 1W

It's blue-grey, 6 and 8.

jd

[peranders]

Mr. Didden, do you mean that the "silver" ring actually is grey? What could the black and brown ring be?

[jan.didden]

Originally Posted by peranders

Mr. Didden, do you mean that the "silver" ring actually is grey? What could the black and brown ring be?

Yes I'm sure it is grey. Anyway, the blue-grey side is where the value starts. I'm not sure about the black and (extra wide) brown bands; they look somewhat non-standard but it may have to do with the power rating. But I looking for more info, it intrigues me.

jd

[jan.didden]

Like here:

So, 68 ohms, 1%

[AndrewT]

I think the gold band tells us it is a four band coding, but with an extra band indicating something non standard.
Temp co should be the fifth band but black for the fourth is the odd one out.
brn (1%) tolerance is extremely unusual for carbon composition.

[jan.didden]

Originally Posted by AndrewT

I think the gold band tells us it is a four band coding, but with an extra band indicating something non standard.
Temp co should be the fifth band but black for the fourth is the odd one out.
brn (1%) tolerance is extremely unusual for carbon composition.

There's a lot of coding charts on the net, and they ALL show that the 3rd band, if golden or silver on a 5-band resistor, is just a placeholder with no value.
If you think about it, it is obvious that E96 and above series need at least 4 value rings to be able to code the available values. Then the 5th is the tol value.

jd

[Apex Jr]

Originally Posted by cliff

Or it is Brown, Black, Gold Silver Blue

which is 10 x 0.1 5% = 1R 5%, but I dont know what Blue is!

http://www.hobby-hour.com/electronic...color_code.php

Cliff

I belive this is correct, HOWEVER I also think this is a BWH Series
Wire Wound resistor which I stock...And I too do not
know what the Blue Stripe is... The extra Orange and Yellow
are Mil-Spec but have never seen a Blue Stripe

http://www.irctt.com/pdf_files/SPH.pdf

Steve @ Apex Jr.