Need help on replacing MKP film capacitor

If you want the exact same one, It's one of these http://www.vishay.com/docs/28119/mkp3382.pdf

You should be able to get it from Element 14.

Value = 100nF = 0.1 uF

MKP = Metalised Polypropylene (capacitor type)

~275 is 275V AC rated (mains rating)   ~305V AC (standard rating)

X2 is the mains rating, if used on the mains side of the transformer, the correct rated capacitor must be used

mains rated capacitors may be used in other parts of the circuit, but not the other way round

If you don't need the exact same brand/model then you should be able to get a 100nF X2 MKP cap from jaycar, altronics, etc.

100n is the value, the M is there to indicate a 20% tolerance

I would expect any 100nF X2 cap should be OK, what's it doing in the circuit?

Also remember to match the correct lead spacing, and lead length, if that will matter for your application.

Do you know that the capacitors you quote=X2 types are for suppression circuits in mains inputs they are NOT by any stretch of the imagination Quality  Hi-Fi products. I wouldnt let them anywhere near any I have repaired or built. Those that post use exotic types are correct. These cheap types output a lot of distortion. Buy Audio quality 630VOLTS types if you want better fidelity. Dont live with those suppression types.
 

Nope.  Wima MKP's and Vishay-Roedersteins are very decent caps for audio quality.  They are functionally equivalent when it comes to audio, except one's red (Wima) and the other's blue (Roederstein).  My tastes lean toward the Wima's for bypassing electrolytics.  If they are used by themselves, the Roedersteins are probably better, IMHO.  It's correct to say that a boutique film cap is going to be better, but one enters into diminishing returns very quickly when comparing cost vs. audio quality improvement with those two particular box caps.  A good quality orange drop or Panasonic mylar is pretty good, too.  Many others are cheap as stated.  As with anything, though, it depends on the particular capacitor.

Just an FYI, but I am not a fan of KZ's.  I positively love Nichicon's ES's and FG's are good, too, but the KZ's I've used seem harsh and lend an "etched" sound to the music.  It's unfortunate the Elna Silmic II RFS's are not up to the voltage rating needs.  I think those things are as good as Black Gates.  It's probably a toss-up between the Cerafines or the ROS's, but the Cerafines are going to cost a lot more being out of production. 

Quote:

Originally Posted by DefQon 

I thought the only Cerafines out of production are the older (up to 450v) caps, the lower farad and voltage rating ones still in production?

Check this out:

http://www.elna.co.jp/en/capacitor/pdf/catalog_13_14_e.pdf

Go to aluminum electrolytics for audio and try to find an ROA Cerafine.  They skip from ROS to ROB - the ROA is listed in their diagrams, but there is no catalog sheet for that classification of capacitor.

Quote:

Originally Posted by DefQon 

True..didn't know. Either way doesn't affect me as I only use Silmic II's for signal in path places in my projects and Panny FM's or Philips BC's for power supply/decoupling etc.

???