Resistor Colour codes

[keynaboutradios]

Hi Everyone!
Please be gentle with me.
I have a resistor with five bands, Brown Black gold gold Yellow, I thought I knew how to read resistor bands, but obviously not!! can anyone shed some light on this for me.

[drussell]

I have a resistor with five bands, Brown Black gold gold Yellow, I thought I knew how to read resistor bands, but obviously not!! can anyone shed some light on this for me.

This is probably one of those oddballs that is a 3-band value with tolerance and temperature co-efficient or something.  The best question is, what value does it read when you measure the resistance with a meter? 

I expect it is likely a 0.1 5% with a temperature coefficient of 25 ppm/K

...though it could be some other oddball code types too, of course, so I'd measure it to see if it is even close to something that makes sense from the colors.

5 band resistor with a 4th band of gold or silver

Five band resistors with a fourth band of gold or silver form an exception, and are used on specialized and older resistors. The first two bands represent the significant digits, the 3th the multiply factor, the 4th the tolerance and the 5th the temperature coefficient (ppm/K).

[Seekonk]

Don't feel bad, I've been in electronics 50+ years and I can no longer figure out what the colors are.  I have to get the meter out to figure out what the color is supposed to be.

[keynaboutradios]

Thanks for replies everyone.
It was burnt out drussell, I did see the yellow band on capacitor markings for Temperature coefficient but no mention for resistors.
Thanks again

[frozenfrogz]

+1 for temperature coefficient. However, I think it should read 1\$\Omega\$ 5% 25ppm because:

Brown	Black	Gold	Gold
1	0	x0.1\$\Omega\$	5%

[janoc]

Don't feel bad, I've been in electronics 50+ years and I can no longer figure out what the colors are.  I have to get the meter out to figure out what the color is supposed to be.

I haven't even bothered to memorize them - the bands are often faded, dirty or you don't have enough light to read them so you don't save much time by doing that. The resistance could be well off as well  every time, or at least one of those cheap eBay testers for a quick check.

[frozenfrogz]

I haven't even bothered to memorize them

It is still handy to memorize the basic colors when you need to dig through a pile of unsorted resistors, looking for something specific

[janoc]

I haven't even bothered to memorize them

It is still handy to memorize the basic colors when you need to dig through a pile of unsorted resistors, looking for something specific

For that a little reference chart stuck to a wall is enough. OTOH, I am keeping my resistors sorted, so rarely have this issue

[drussell]

+1 for temperature coefficient. However, I think it should read 1\$\Omega\$ 5% 25ppm because:

Brown	Black	Gold	Gold
1	0	x0.1\$\Omega\$	5%

Indeed...  I believe you are correct, sir....

In my haste, hurredly posting a reply before lunch, I do believe I did, indeed mixmultiplexmymultipliers...

I revise my guess to 1.0