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Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor

Brand:|Model: DFFC-0.47|Part # 027-458
The Dayton Audio film and foil polypropylene capacitors are ideal for bypass use, have low ESR and superior sonic detail.
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Part # 027-458

Product Details

Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor

The Dayton Audio film and foil polypropylene capacitors are ideal for bypass use, have low ESR and superior sonic detail. 

Specifications: • Rated: 400 VDC • Tolerance: 5% • Value: 0.47 uF • Dimensions: 16 mm Dia. x 35 mm L.

Product Specifications
  • Capacitance0.47 µF
  • Voltage Rating400V
  • Tolerance5%
Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor
  • BrandDayton Audio
  • ModelDFFC-0.47
  • Part Number027-458
  • UPC844632013652
  • Product CategoryFilm and Foil Crossover Capacitors
  • Unit of MeasureEA
  • Product Rating
    (7 Reviews)
  • Weight0.012 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor
in the Film and Foil Crossover Capacitors product category.


Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor
Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor is rated 5.0 out of 5 by 7.
Rated 5 out of 5 by from Silent TurntableI was getting a huge pop through my speakers everytime i turned my record player off to change records play the other side etc. I followed some advice from the vinylengine forum and swapped out the capacitors on the circuit board with four identical valued Dayton ones. The Dayton ones where quite a bit bigger than the Philips ones they replaced but other than that the replacment was straight forward. Now all i can here is the click of the switch. The turntable plays at the corect speed and possibly sounds better as a result of a more stable powe supply.
Date published: 2013-02-08
Rated 5 out of 5 by from Wow!I have never tried bypassing capacitors before so I thought I would give it a try. I mounted a Vifa XT19 tweeter to my test listening panel with two 1.6mfd 400V Solen Caps and the tweeter sounded very good. Then I switched to a 2.5mfd 400V Solen Cap and bypassed it with this dayton and it sounded much better; More detail, more dynamic. I was listening to one tweeter in mono but the sound sounded more 3 dimensional. I wish Dayton made these in larger values up to 2mfd. I would like to bybass the Caps on my Midrange high pass and see if I get any improvement.
Date published: 2013-02-06
Rated 5 out of 5 by from A great bypass cap for metalized polyropyleneI used these in parallel with Solen fast caps in crossover networks where the Dayton caps contribute 10 to 20 percent of the total value. The Daytons very definitely improved the sound.
Date published: 2008-08-27
Rated 5 out of 5 by from Better than Orange Drop 715P's and 716P's!I've decided to use these as coupling caps in my last tube amp, because 0.47uF, 400V Orange Drops were simply too big to fit. There was a noticeable sound quality improvement right away. A more extended bass and treble were apparent...more clarity in acoustic instruments and female voices. At $1.39, these are a steal! I'm gonna buy a hundred before PE raise the price! They need a break in period of around 100 hours before they sound their best. (At first they may sound a tad too bright).
Date published: 2008-04-09
Rated 5 out of 5 by from ExcellentThe price to performance ratio of these is just ridiculous. Excellent quality part, very good price. With such good quality, I just hope it stays that way!
Date published: 2008-01-15
Rated 5 out of 5 by from Excellent Bypass: Better than Copper PIO???I don't know if these are better than Copper PIO, because I haven't AB'd in the same speaker.However these I have used as midrange bypass, and they are good. No harshness, definite detail increase. Would I say warm, no, but would I say cold no. Neutral. very neatral. also short breakin time 3-5 days.
Date published: 2008-01-13
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Product Q&A

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Dayton Audio DFFC-0.47 0.47uF 400V By-Pass Capacitor

Is there a positive and a Negative side?

Asked by: arran
No, these caps are non polarized so orientation does not matter.
Answered by: MattP
Date published: 2015-04-24

How "Low ESR" Are They?

Well?How low ESR are they?
Asked by: Einric
Hi Einric,,Below is detailed explanation of ESR and its math to calculate....Have Fun,,,, i recommend not consuming yourself over ESRsince its not that critical to crossover networks...One of the most important parameters in evaluating a high frequency chip capacitor is the Q factor, or the related equivalent series resistance (ESR). In addition to providing excellent performing RF components, JTI strives to provide our customers with accurate and complete data. Towards this end, a more detailed discussion of Q & ESR measurement issues follows.In theory, a "perfect" capacitor would exhibit an ESR of 0 (zero) ohms and would be purely reactive with no real (resistive) component. The current going through the capacitor would lead the voltage across the capacitor by exactly 90 degrees at all frequencies.In real world usage, no capacitor is perfect, and will always exhibit some finite amount of ESR. The ESR varies with frequency for a given capacitor, and is "equivalent" because its source is from the characteristics of the conducting electrode structures and in the insulating dielectric structure. For the purpose of modeling, the ESR is represented as a single series parasitic element. In past decades, all capacitor parameters were measured at a standard of 1 MHz, but in today’s high frequency world, this is far from sufficient. Typical values for a good high frequency capacitor of a given value could run in the order of about 0.05 ohms at 200 MHz, 0.11 ohms at 900 MHz, and 0.14 ohms at 2000 MHz.The quality factor Q, is a dimensionless number that is equal to the capacitor’s reactance divided by the capacitor’s parasitic resistance (ESR). The value of Q changes greatly with frequency as both reactance and resistance change with frequency. The reactance of a capacitor changes tremendously with frequency or with the capacitance value, and therefore the Q value could vary by a great amount. See Equations 1 and 2.for 1&2 see photos attached
Answered by: sal J
Date published: 2013-06-04

Just want to confirm these are *not* metalized?

Asked by: hukkfinn
They are NOT metalized. They are FILM & FOIL polypropylene. The part number prefex DFFC means Dayton Film & Foil Capacitor. These are film and foil... NOT metalized. Dayton's metalized polypropylene capacitors have the part number prefex DMPC.
Answered by: JimOfOakCreek
Date published: 2013-06-04
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