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Panasonic ECWFD or ECWFA for signal path.
Panasonic ECWFD or ECWFA for signal path.
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Old 2nd December 2019, 08:26 PM   #1
nenad88 is offline nenad88  Serbia
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Default Panasonic ECWFD or ECWFA for signal path.

I got impression reading this forum that these Panasonic caps are good choice for this use. Just cant find what is the difference between these two models. Anyone have a clue, I have checked datasheets and could not spot any difference except tolerance.

And is there any other MKP cap worth trying with similar price/performance ratio.
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Old 5th December 2019, 03:22 AM   #2
asuslover is offline asuslover  Romania
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Panasonic ECWFD or ECWFA for signal path.
ECW Metallized Plastic Film Capacitors - Panasonic Electronic Components | Mouser
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Old 5th December 2019, 08:13 AM   #3
nenad88 is offline nenad88  Serbia
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Thanks for link.

Im also interested which brand and type of mkp caps are good for coupling bypass caps. I was looking at KEMET PHE426 but are there any better options?
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Old 5th December 2019, 12:29 PM   #4
Mark Tillotson is offline Mark Tillotson
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From that link clearly the ECW-F(E) are the ones listing active filters in the intended uses (however they only seem to be available in 5% or 10% tolerance, which is not suitable for active filtering!)


Why choose one manufacturer and one series? Why not do a parametric search for the best match to your requirements?
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Old 5th December 2019, 02:47 PM   #5
asuslover is offline asuslover  Romania
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Panasonic ECWFD or ECWFA for signal path.
the tolerance is indeed 5% or 10% , but because I used panasonic components before , I could say that 5% tolerance is more like 1-2%. And because these caps are very cheap you could buy a few more and match the value you need .
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Old 5th December 2019, 08:23 PM   #6
nenad88 is offline nenad88  Serbia
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Ok I will get ECWFD, ECWFA and ECWFE they are cheap so its ok.

Click the image to open in full size.

It doesnt need to be only Panasonic or ECW series that is why I said is there any other cap I should look at, but I dont want to use those expensive long axial "audio caps". Only place I know where to look is here Humble Homemade Hifi - Cap Test and this site.

And btw ECWFD also lists as active filter circuits as recommended application.

Click the image to open in full size.

Last edited by nenad88; 5th December 2019 at 08:29 PM.
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Old 5th December 2019, 08:30 PM   #7
jean-paul is offline jean-paul  Netherlands
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ECWFE have a more sturdy casing. I would choose these.
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Old 6th December 2019, 04:32 AM   #8
asuslover is offline asuslover  Romania
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Panasonic ECWFD or ECWFA for signal path.
In this amplifier Tom is using a film capacitor for coupling LM3886 Done Right: Best DIY implementation of the LM3886 80W gainclone – Neurochrome ,
it looks like panasonic film cap.
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Old 6th December 2019, 09:15 AM   #9
nenad88 is offline nenad88  Serbia
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ECW series is often used as coupling cap.
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