Capacitor - JJ Electronics, 500V, 40/20/20/20µF, Electrolytic
JJ Electronic multi-section electrolytic can capacitor, 40/20/20/20 µF -10%+30% @ 500 V. 1-½" diameter x 2" height (40 x 50 mm). Clamp mount, solder lug terminals. Excellent for music industry applications
JJ Electronics Part Number:
|A.C. Current (Iac)||160 + 3x80 mA|
|Item Height||2 in.|
|Rated Voltage||500 V|
|Section 1 Capacitance||40 μF|
|Section 2 Capacitance||20 μF|
|Section 3 Capacitance||20 μF|
|Section 4 Capacitance||20 μF|
|Tab Type||solder tabs|
|Tan δ, maximum @ 100 Hz, 20°C||0.20|
|Temperature Rating||-25°C to 70°C|
|Packaging Dimensions||2.4 in. × 1.6 in. × 1.6 in.|
|Weight (Packaging)||0.155 lbs.|
|Specification Sheet||All Models|
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Questions and Answers
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2 answers I am replacing a 40/20/20/10 @ 450V. Will this multi cap replace that? Thanks!
Asked by Anonymous on August 14th, 2019.
Increasing the voltage rating is fine as long as it physically fits in your unit. As for using a 20uf in place of a 10uf, you would need to check based on the application.
The JJ cap requires a clear opening of at least 1.3" diameter. If your original can cap is smaller than that, you either punch out the hole to a larger diameter, or DO NOT USE the JJ cap.
1 answers HAS ANYONE INSTALLED THIS CAP IN THE DYNACO PAS 2 PREAMP ? IF SO, COULD YOU PROVIDE ME WITH A WIRING DIAGRAM SHOWING WHICH WIRE WOULD BE CONNECTED TO THE 40 MFD? THANK YOU AND GOD BLESS !
Asked by Anonymous on December 9th, 2017.
I do not have experience with the Dynco PAS 2 preamp, but looking at the schematic (which does not show the Filter capacitor values), I would use the 40mfd tap as the first stage filter. As on old Fender guitar amps, filtering originally was done with a 20-20-20-20 Can Cap, but later upgraded to a 40-20-20-20, with the 40mfd being the first stage filtering. Gives you better startup (inrush) spike protection. Hope this helps. Dave
1 answers What is the spacing between the contacts on the bottom? I need to know this.
Asked by Anonymous on October 8th, 2019.
The two bottom contacts are 0.535" apart. The distance from the bottom lug to the second row of lugs is 0.535" and the distance from the middle lugs to the top lugs is 0.45". Keep in mind, these dimensions are approximate and the riveted terminals means each will be slightly different.
1 answers do you have to use all the section of the cap.need only 20/20/40.really like the price.
Asked by Anonymous on April 10th, 2020.
1 answers I run across a lot of audio amps with 40/40/20 cans or firecracker P/S caps. I would assume you could parallel two 20MFD sections to create this configuration. Do you know if this has been successful? It would make this can a reasonable priced option the 4 section can from CE is over $40.
Asked by Anonymous on April 21st, 2021.
We have gotten reports from customers that would indicate this is successfully done fairly regularly.
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Great can cap for low to medium amp projects, especially tube rectified.
ITESTED THIS MULTI CAP ON MY RC BRIDGE COMPARATOR...SEEMS TO BE EXCELLENT...WILL KNOW MORE WHEN PROJECT IS BUILT & TESTED...GOOD PRICE
They work fine but required resizing the hole spacing from the old Mallorys.Also they measure 47/22/22/22
Excellent product, perfect for amp builders like myself! Small footprint, low ESR. No, don't try to replace your can cap in that '67 Prince with this unless you don't mind breaking the vintage code of conduct, but if you design and build cool, great sounding amps then check this one out.
I've used JJ can caps to save expense in projects in the past, this last one was doing an EICO ST70. If I had to do it again, I'd chose to avoid the JJ 40/20/20/20. Its leads are so broadly spaced it made it a real PITA to fit this can. Really braindead design, could've been less of a cluster if they'd used their head when it came to the lead spacing.
These capacitors are a great deal. They are inexpensive, take up little room, handle plenty of voltage and are well made. The uf values are good for most of my amp projects, too. Definitely five star value.
These caps are a great deal. They are inexpensive, take up little r
This is a great cap for small tube amps. The 500V rating gives plenty of headroom for the startup surge of amps that operate in the 300-350V B+ range. A bit larger in diameter than most multi-cans, but can squeeze into most rebuilds with the 1.5" clamp and sometimes drilling one extra #6 or M3 screw hole to mount the clamp. I like to use this cap on EL84 builds. It takes up less than half of the flat space and simplifies wiring compared to individual caps that I used to use, and has yet to disappoint. Also note the 160mA and 80mA i(ac) ratings per section, which should be more than enough for anything using EL84 or 6V6. As a bonus, the price is tough to beat for the functionality. I recommend you give one a try if you are (re)building a <12 Watt amp.
Great parts, service and price!!