Nichicon 6800uf 56wv CE 85c replacement

[SteveNielsen]

I can find no specs on these caps. They are bulged at top and test bad. Date code on top indicates 1993, so it's no surprise.
Tests (OOC):
4982uF .05 ESR
5469uF 0 ESR
They are from the PSU of a Sony STRD611 stereo receiver.

[stj]

Re: Nichicon 6800uf 56wv CE 85c replacement

3800ma general junk.

[SteveNielsen]

Re: Nichicon 6800uf 56wv CE 85c replacement

Not surprising. Thanks. I did look for LK series in Nichicon but couldn't find anything.

[japlytic]

Re: Nichicon 6800uf 56wv CE 85c replacement

The terminal style (one terminal offset 90 degrees) corresponds to Chemi-Con terminal code LI and with the current series of Nichicon snap-in units, I cannot seem to find units with this terminal style, although Chemi-Con still makes units with the aforesaid terminal style.

[LLLlllou]

Re: Nichicon 6800uf 56wv CE 85c replacement

They're actually pretty poor quality, internally at least, compared to japanese polymers.


______________
bella

?????????

ALL polymers are better than wet electrolytics, what's your point???

When someone starts making 6800+ uf, 50+ volt, polymers your post may become relevant.

BTW, looks like the Nichicon LS series is the current replacement for the LK series, but anything with 3 amps of ripple current, or better, should be fine.

[SteveNielsen]

Re: Nichicon 6800uf 56wv CE 85c replacement

Thanks everyone for the advice and info. This is not a critical project and it's been tabled for the time being. The caps are from the PS of a Sony STRD-611 reciever I picked from the trash. I checked the specs on the reciever and it's not that great, however I could utilize a 75watt/channel stereo amp sometimes. I don't have anything close enough to replace the caps with even for a test and on a fixed income I've got to be carefull what I spend money on. Perhaps I'll find the caps in something else that comes my way but I don't think they are that commonly used.

[stj]

Re: Nichicon 6800uf 56wv CE 85c replacement

given the fact that newer caps will be smaller and you need a 10mm snap-in,
i'd be looking out for something like 10,000uf at 63v

[SteveNielsen]

Re: Nichicon 6800uf 56wv CE 85c replacement

Thanks STJ. I'm not concerned that they are snap-ins, I can fit radials if need be. Why do you say BOLO for 10,000uf? I know you can go somewhat higher on capacitance in many cases but that seems like a big jump. Is that because they are more common thus more likely to be found in used gear? Also, other than audio power supplies what other equipment is more likely to have caps that I could use for this?

[PeteS in CA]

Re: Nichicon 6800uf 56wv CE 85c replacement

The LK series (and 105C GK series) are large can general purpose parts, but I wouldn't call them junk. They were very good for their time - introduced in the late 80s, IIRC - and for filtering 50Hz/60Hz. By the time this stereo receiver was produced the LK series had been superceded (IIRC) by the LQ series. Nichicon tends to be really slow about obsoleting older, popular, series.

Comparing general-purpose snap-ins to low impedance electrolytics is an apples-pears comparison, and snap-ins vs. polymer is an apples-pineapples comparison. BTW, the highest voltage rating for a polymer cap I've seen - not that I've looked recently - is 35V. Put one of those in a 50V circuit and you may witness a launch!

I'd suggest replacing this with the current 105C series part, which may also be smaller, improving airflow.

[redwire]

Re: Nichicon 6800uf 56wv CE 85c replacement

Before we blame the capacitor, are the rectifier diodes ok?
I find it odd both went prego, being reasonable quality filter caps in an audio amp.

[WaFfLeFuR]

Re: Nichicon 6800uf 56wv CE 85c replacement

silly question with these snap in style caps.... the solder tab is much larger than a typical radial style, do these large tab style caps carry more amperage than a radial style of the same farad?

[stj]

Re: Nichicon 6800uf 56wv CE 85c replacement

they can do,
the good news is most of them have the same distance between the tabs - 10mm
so you only need to watch the diameter & height when ordering.

there are some exceptions, very large caps may have between 3 and 5 tabs, but only 2 are used - the others are just to hold it to the board.
and there are some rare cans with 2 seperate capacitors in one can.

[kaboom]

Re: Nichicon 6800uf 56wv CE 85c replacement

They're actually pretty poor quality, internally at least, compared to japanese polymers.

Way to go, one-quote-wonder.


You don't strike me as someone who'd even know the difference- coming in here and stirring up a little "fight" among members; a hell of a nerve, not even a proper comparison.
Whadda you care, probably got an agenda.

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[c_hegge]

Re: Nichicon 6800uf 56wv CE 85c replacement

^
The can of meat has been removed (as has its manufacturer) .