MKS is now polyester / mkt - no more polystyrene.
I am not aware of anyone making ... 2,2 uF / 250 Vdc polystyrene ( not counting boutique caps - Amphenol made some but does it still makes them is a question ).
I am not aware of anyone making ... 2,2 uF / 250 Vdc polystyrene ( not counting boutique caps - Amphenol made some but does it still makes them is a question ).
You can see the trend looking at Morgan Jones books, 3rd & 4th edition - for phono/RIAA preamp he used polystyrene for dc series coupling and now he shows MKP1840 in the same position.
I could not find polystyrene in any meaningful value above 2n2 in 250-630Vdc range.
The same with polycarbonate - what can be found are old Philips stocks ( locally , 1uF/100Vdc ).
I could not find polystyrene in any meaningful value above 2n2 in 250-630Vdc range.
The same with polycarbonate - what can be found are old Philips stocks ( locally , 1uF/100Vdc ).
Hello There,
I recently left Vishay after 5 years as their product marketing manager for film capacitors in the Americas region. We offered similar products to Wima. I know people get heated if I were to comment on which may be better for audio and I don't have expertise to comment, so I'll just mention the construction styles below....
The double metallized is not stacked film but refers to the fact that the film itself has double metallization (both sides) as opposed to one side.
Vishay followed similar nomenclature for their products
MKP = Polypropylene
MKT - Polyester
KP = Film/Foil
MKC is no longer available (for a very long time).
AFAIK KP caps were the intended replacement for polystyrene caps when they went obsolete. At least that is what they were offered like about 20 years ago.
AFAIK KP caps were the intended replacement for polystyrene caps when they went obsolete. At least that is what they were offered like about 20 years ago.
New WIMA FKP1 1200V have a yellow filler. Most of the others (FKP1 0.22 630V, MKP4, MKP10) have red filler. All bought from either Mouser or Digikey in the last couple of years.