Visually IDing NPO/C0G caps in the junkbox

[Tom Hammond-3]

Folks:

Just received a query from a friend, asking how to VISUALLY identify
a NPO/C0G ceramic capacitor if it's in your junkbox.

I've heard that NPOs should have a colored band along their top edge,
but I've not been able to confirm this via any published info, of
from more than one 'informed' source.

Suggestions are welcome.

Thanks,

Tom Hammond  N0SS

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Jason Milldrum]

It's my understanding (and experience) that many ceramic NP0 caps have a
black band on the top. However, I don't believe that there are any
standardized markings, so YMMV.

73,
Jason Milldrum, NT7S

Tom Hammond wrote:

> Folks:
>
>
> Just received a query from a friend, asking how to VISUALLY identify
> a NPO/C0G ceramic capacitor if it's in your junkbox.
>
> I've heard that NPOs should have a colored band along their top edge,
> but I've not been able to confirm this via any published info, of from more
> than one 'informed' source.
>
> Suggestions are welcome.
>
>
> Thanks,
>
>
> Tom Hammond  N0SS

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Geoffrey Mackenzie-Kennedy-2]

Tom N0SS wrote:


> Folks:
>
> Just received a query from a friend, asking how to VISUALLY identify a
> NPO/C0G ceramic capacitor if it's in your junkbox.
>
> I've heard that NPOs should have a colored band along their top edge, but
> I've not been able to confirm this via any published info, of from more
> than one 'informed' source.

------------------------------------------------------------

Hi Tom,

They usually have a black band. The encapsulated ones have a code number
which varies, and my cypher cracking book is in Brussels - sorry.

73,
Geoff
GM4ESD



_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Tom Hammond-3]

Tom N0SS wrote:


>Folks:
>
>Just received a query from a friend, asking how to VISUALLY identify
>a NPO/C0G ceramic capacitor if it's in your junkbox.
>
>I've heard that NPOs should have a colored band along their top
>edge, but I've not been able to confirm this via any published info,
>of from more than one 'informed' source.

------------------------------------------------------------

Hi Tom,

They usually have a black band. The encapsulated ones have a code
number which varies, and my cypher cracking book is in Brussels - sorry.

73,
Geoff
GM4ESD



_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com