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Need help to recognize a capacitor (SMD)

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intiCA

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hello everyone,
I am new to this forum and honestly saying I didn't find here an appopriate branch for my question.
So I've chosen this one.

Well,
I need to know all characteristics of capacitor (SMD), a picture attached.
I did some search on data which are written on the body. However, I found nothing useful on this matter. In other words this kind of capacitors are just missing in EPCOS datasheets I found.

So, could anyone shed the light on this matter?

In particular I need to know:
  • nominal capacitance
  • type of smd capacitor
  • equivalent sample

Thanks in advance.
 

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    intiCA

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Hi,

What about type? Are there any thoughts?
Click to expand...
Updated in the meantime: --> see post#2

Klaus
 

I've seen.
SMD tantalum capacitors, do they die same way over the years as usual polar electrolytic ones? Your opinion please?
 

The failure mechanism for a Tantalum capacitor is significantly different to that of Aluminum capacitors.

Epcos, Kemet, AVX and other major manufacturers have plenty of white papers discussing failure mechanisms and its mitigation. Of the top of my head, reverse polarity will kill a Tantalum almost instantly, whereas the Aluminums are more forgiving in this respect.

BTW, your photo shows a 25v capacitor.
 
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schmitt trigger said:
The failure mechanism for a Tantalum capacitor is significantly different to that of Aluminum capacitors.

Epcos, Kemet, AVX and other major manufacturers have plenty of white papers discussing failure mechanisms and its mitigation. Of the top of my head, reverse polarity will kill a Tantalum almost instantly, whereas the Aluminums are more forgiving in this respect.

BTW, your photo shows a 25v capacitor.
Click to expand...

polarity reverse: it's clear, it kills aluminium ones too.
Mostly I'm interested in, for example, aluminium comprise electrolyte loosing its features over the years. What about tantalum ones. Do they remain extremely stable over the years?

Thanks in advance
 

Hi,

Aluminum capacitors use wet electrolyte.
It may dry out over the years.

Tantalum uses dry electrolyte, thus it can't dry out.

Klaus
 
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