YEC capacitor question

[nkeck72]

I have recently gotten my hands on a rated 6 Farad, 2.7 volt YEC capacitor. With its small size and rather low voltage rating, I question whether this is a legit 6F cap or yet another fake. The only problem is that I don't have any testing equipment, only a D battery and some wire. (My cheapo DMM finally broke and I have nothing to test capacitance, ESR, etc.) My question is, is there any way to test the legitimacy of the cap?

I just have that inkling of a feeling that tells me that the cap may indeed be fake. I have attached pics of the cap and datasheet.

Capacitor: http://imgur.com/wytnfHo
Datasheet: http://imgur.com/6OXk35R

Notice that it isn't bulged, and although the legs are bent a little, that was me, when I got the thing it was new. I have only put it through a single charge/discharge cycle to see if it would blow like all those fakes I have seen before.

I have taken notice that people have put the YEC brand caps on their "avoid" list. Why exactly? Are YEC caps like the one I have typically fake and/or have a short life?

[ReeceyBurger123]

Re: YEC capacitor question

Yec caps are pure trash best way to test is with an Esr meter or an Lcr capacitance meter.

[mariushm]

Re: YEC capacitor question

That's a SUPERcapacitor, it has 6 farads at 2.7v , not uF.

Supercapacitors have different chemicals inside, so there's no way of knowing if these supercapacitors will behave like their regular capacitors. Could be different factories, different materials, different anything.

As for measuring, you could do it with an oscilloscope, see this guide: https://www.youtube.com/watch?v=VylC8JFoiBo

Though for supercapacitors, you don't care about low esr and whatever, you use them for the huge amount of energy they hold (like, use them as replacement for a backup battery or something).

Careful about heating the leads for too long, these supercapacitors are only rated for up to about 65c. Shouldn't heat the insides too much by accidentaly keeping the solder iron on the leads.

[nkeck72]

Re: YEC capacitor question

Is there a way to tell if this is a fake other than with the measuring equipment?

Also, I noticed the part number on the cap is PL6051020 but the datasheet says the format should be WPL2R76051020. Could this mean something significant or is it probably an outdated datasheet?