Red or Green Wima

[Sunsun22]

For the most common 5mm pitch Wima caps, there are green and red (some are black too). May I know what are the differences between these red and green wima?

Thanks

 

[RDL2004]

I think all Wima box-style caps are red. That's why I use them, they look good on the pc board The green ones are probably just another brand, maybe Roderstein?

Wima products

- Rick

 

[SY]

My Wima FKP-1 are blue. FKC-2 are yellow. And I have some green ones, but I'm not sure of the series. These are all out of an assortment pack provided by Wima's local rep.

 

[Jan Dupont]

The FKP2 Polyprop series are green

 

[cowanrg]

they all have a different sound.

the red ones sound very warm. they have a very passionate sound to them.

the green ones give an organic sound to the music.

the blue ones will give you liquid midrange and airy highs.

the yellow ones tend to make your tweeters beam.

 

[Spirtos]

WIMA FKP2 (foil polypropylene) are green, range 100pF - 2,2nF and voltage 63V and 100V,Also tolerance 5%, 2,5%, 1%.

FKP1, red, same values as above but voltage range up to 1000V.

WIMA MKS 02, MKS 2, MKS04, MKS4 (metallized polyester) are red, different dimensions and range between 100nF - 10uF . MKS4 voltage 100V - 1000V.

MKP4 and MKP10 (metallized polypropylene) value range 100n - 10uF and voltage 160V - 1000V.

There are also some other general purpose types like : FKS, FKC with red, yellow, green colours.

That's what I have used so far. Generally it is difficult to find all the ranges and types in one distributor, some types is almost impossible to find them. So far I have not achieved it.

Regards
Spiros

 

[djQUAN]

that's funny....... I have a few 3.3uF 63V green wimas.

 

[Nordic]

I think the green ones are slightly bette (more expensive at least) but I love the 10nf red ones for decoupling opamps... it realy cleans up.

 

[oncle_tom]

Fort their newest production Wima uses only red boxes.

Older FKP2 are green, FKC yellow, FKP1/3 blue...


Peter

 

[phase_accurate]

This German manufacturer (Silbersand) seems to use both red and green types:

http://www.johannes-krings.com/uploads/krinks2/images/1340/DSC_0037

Regards

Charles

 

[phase_accurate]

My favourite distributor carries the green ones, but only with 10% tolerance unfortunately:

http://www.distrelec.com/ishopWebFr...and/node/is/acabaaacadac/and/series/is/1.html

I don't dare to ask how much they will cost with 2.5 % tolerance since the 10 % ones are already quite expensive.

They seem to be quite good however. They have a low-inductance foil-construction and low dielectric absorbtion:

http://www.distrelec.com/ishopWebFr...and/node/is/acabaaacadac/and/series/is/1.html

Regards

Charles

 

[RDL2004]

Well, if you had followed the link I gave and checked the data for each and every type of box-style capacitor from 2.5mm to 7.5mm, as I did, you would see that they are now all red.

The ones you guys have or can find must be old stock, or maybe the red ones are all they export to the US?

However, if you look here you will find green ones

 

[somewhoo]

Newest wima production lines are all red casing, so you can tell the difference between series by the combinations of colors used for values marking, PCM value/distance and epoxy seal on the bottom, so if we take their line for "audio equipment", that`s FKP02 (2,5mm PCM), FKP2 (5mm PCM), FKP3 (7,5mm-15mm PCM)..
So we`re getting
FKP02 Colour: Red. Marking: Black. Epoxy resin seal: Yellow. PCM 2,5mm. (Polypropylene (PP) Film and Foil Capacitors)
FKP2 Colour: Red. Marking: Black. Epoxy resin seal: Yellow. PCM 5mm. (Polypropylene (PP) Film and Foil Capacitors)
FKP3 Colour: Red. Marking: Black. Epoxy resin seal: Yellow. PCM 7,5mm-15mm. (Polypropylene (PP) Film and Foil Capacitors)
There`s also other series for using for coupling and decoupling "and not for audio" like MKP2 (5mm PCM) or MKP4 (7,5mm-15mm PCM), that lots of DIYers suggest, they are:
MKP2 Colour: Red. Marking: Black. Epoxy resin seal: Red. PCM 5mm. (Metallized Polypropylene Capacitors)
MKP4 Colour: Red. Marking: Black. Epoxy resin seal: Red. PCM 7,5mm-52,5mm. (Metallized Capacitors)
So i think we getting the pattern, and in comparison with "not for audio" line like MKS2 which is:
MKS2 Colour: Red. Marking: Silver/White. Epoxy resin seal: Red. PCM 5mm. (Metallized Polyester (PET) Capacitors)
So bottom line, maybe you guys with green ones should check markings and epoxy seal colors to resolve which series you`ve got

Maybe we could make S/Q test of each series, that should be useful

 

[Refugee1]

Have a look at this thread as they are not all good.
This one has split open while laying NOS in a drawer for a few years.
You will need a free registration to the web site to see the thread though.
• Login

 

[Capt Grogg]

looks like metalized paper, at least 30 yr old across line cap

 

[Refugee1]

Yes it is not as old as 30 years perhaps 20 years.
We were discussing line filter failures when I dug it out for a photo shoot.
We found that some line filters were failing after about 10 years old with capacitors of various makes using the same resin encapsulation as this one.

 

[Mooly]

And that is an X2 rated part according to the markings. Resin encapsulated cap failure happened to me to,
http://www.diyaudio.com/forums/power-supplies/246394-dc-blockers-mains-filters-2.html#post3722631

 

[Refugee1]

Yes we came to the conclusion that failure is a time thing especially after I found this one.

 

[Mooly]

It certainly seems that way.

 

[jacco vermeulen]

This one has split open while laying NOS in a drawer for a few years.

BO manufacture series, aka over 2 decades old. Wrong drawer.