Polystyrene capacitors

[89-300ce]

I've just received some polystyrene capacitors to implement in a double by-pass. On these caps one end of the translucent plastic body where one of the leads connects is red like the one marked 10,0000K in the centre of the picture.

Are these caps polar and as such need to be installed with a specific direction of current flow?

Jorg

[ratitifb]

i'm thinking not as polystyrene type

[Chas]

They are non-polar. The line usually denotes the internal connection to the outermost foil.

[89-300ce]

Thank you.

Jorg

[Earl K]

They are non-polar. The line usually denotes the internal connection to the outermost foil.

- Yep,
- The color of the banding ( ring ) also denotes the voltage rating for this sort of "goldfish" cap.

As a for instance ( from memory ) ;

Black = 630 VDC
Blue = 250 VDc
Red Violet = 160 VDC
Yellow = 63 VDC
Green = ??

[rs237]

Hi Earl K,

for your memory :

Brown = 1000 VDC
Black = 630 VDC
Violet = 400 VDC
Green = 250 VDC
Red = 160 VDC
Yellow = 63 VDC
Blue = 25 VDC !!!!!

The outermost Foil is insignificant in bypass applications.
Only Preamp and Radio Applications them to be closer to Ground connected.
More Infos sorry in german:

http://www.fh-luh.de/fb5/lbm/downloa...ondensator.doc


regards
juergen

[Earl K]

for your memory :

Brown = 1000 VDC
Black = 630 VDC
Violet = 400 VDC
Green = 250 VDC
Red = 160 VDC
Yellow = 63 VDC
Blue = 25 VDC !!!!!

The outermost Foil is insignificant in bypass applications.
Only Preamp and Radio Applications them to be closer to Ground connected.
More Infos sorry in german:

Thanks Juergen ! ( I was hoping someone new the real story on those banding colors )

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