EPCOS (TDK) and Cornell Dubilier (CDE) electrolytic capacitors

[momaka]

Anyone have any opinion or experience with EPCOS (TDK) and Cornell Dubilier Electronics (CDE) electrolytic capacitors?

I was able to find only three posts that seemed more relevant:
https://www.badcaps.net/forum/showpo...92&postcount=6
https://www.badcaps.net/forum/showpo...80&postcount=3
https://www.badcaps.net/forum/showth...hlight=cornell

So going by these, looks like CDE is okay, but EPCOS not so much?

Basically I am looking for some larger can caps for an audio circuit: 50V, 4700 uF, to be exact. They will be filtering a *linear* (mains transformer) output, so no high-frequency stress or SMPS or anything like that.

Any comments or suggestions? The only reason I ask is because they are all similarly priced to Nichicon VR and Rubycon USC. I was just curious to try out a non-Japanese brand of capacitors. But since these will be going in another person's amplifier board and not my own stuff, I am also reluctant to try anything new.

[Electone]

Re: EPCOS (TDK) and Cornell Dubilier (CDE) electrolytic capacitors

I've used CDE filter caps for a lot of audio amplifier / receiver restoration projects and they have been excellent. Mostly the SLPX and 380/381/382 series.

[petehall347]

Re: EPCOS (TDK) and Cornell Dubilier (CDE) electrolytic capacitors

epcos are fine ..have used them before no problems

[Behemot]

Re: EPCOS (TDK) and Cornell Dubilier (CDE) electrolytic capacitors

Basically I am looking for some larger can caps for an audio circuit: 50V, 4700 uF, to be exact. They will be filtering a *linear* (mains transformer) output, so no high-frequency stress or SMPS or anything like that.

Any comments or suggestions? The only reason I ask is because they are all similarly priced to Nichicon VR and Rubycon USC. I was just curious to try out a non-Japanese brand of capacitors. But since these will be going in another person's amplifier board and not my own stuff, I am also reluctant to try anything new.

Should be fine for that, they won't see much stress in there.

They sometimes tend to fail in some high-power UPS where they are under lot more stress, though that may often be because the UPS itself went bad. It's true that regarding the bulk caps in stand-alone Smart-UPS or Back-UPS, I have not yet seen them bad, even if they were some 20yo models. APC was using/uses whole lot of different brands in those positions, including Vishay, EPCOS, CDE, IC, Samsung…

[momaka]

Re: EPCOS (TDK) and Cornell Dubilier (CDE) electrolytic capacitors

Cool, thanks for the info fellas.

In the end, though, I went with Rubycon - not because I am more biased towards the Japanese brands, but because I found that two of the four caps I want to replace were actually rated for 63V, not 50V. What's worse is that the manufacturer of this amp is using a linear power supply that outputs about 61-62V DC after rectification. Thus, I decided to go with 80-100V -rated caps. As such, the only ones that fit my size constraints were the Rubycons (USC series, IIRC). EPCOS has some cheaper caps, but they were only a tiny bit cheaper. I didn't go with them or their other offerings because they were actually much larger, and I don't think the power supply could accommodate their height.

But I might try EPCOS and CDE for that ThermalTake S850M PSU I have that needs a new primary cap.