Panasonic FC series - leaking? quality gone?

[ChaosLegionnaire]

Re: Panasonic FC series - leaking? quality gone?

yupp, that greenish colour looks exactly like copper oxide. looks like the copper of the cap leads has somehow become oxidised and it seemed to originate from inside the cap. if it were due to oxidation/corrosion due to environmental storage conditions, the oxidation would be seen randomly around and all over the leads but it seems to be occuring coming out from the leads inside the cap, so something went wrong inside the cap.

if this happened on only one cap, i'd just attribute it to being a bum/lemon cap that escaped qc at the factory. shit happens...

[momaka]

Re: Panasonic FC series - leaking? quality gone?

I've seen capacitors leak white, yellow, brown and black colored electrolyte but never green.

That green stuff is corrosion from the leads, suggesting either electrolyte has done it or something else when the capacitor was cleaned.

I've seen this quite a bit on old Nichicon PR series capacitors, and those tend to leak out of their bungs quite frequently after some years. I've also seen this on some new Nichicon PM caps.

Gosh, is FC's quality has gone to china?

Possibly.
What hasn't, these days?

[MixMasta]

Re: Panasonic FC series - leaking? quality gone?

I've seen capacitors leak white, yellow, brown and black colored electrolyte but never green.

[redwire]

New Panasonic FC series cap I got from Digikey, tossed it in the parts bin a year ago. Today, I saw the leads have green corrosion on both leads at the bung?!
It this leaking, yet never used? EEUFC1C392
The datasheet says: "This Series is no longer available for purchase in the country of Japan."

Gosh, is FC's quality has gone to china?