Tantalium caps and aging

[hifihifi]

Are Tantalium caps aging if they are used at high temperatures like 50°C.

Elektrolytic are drying in time.

What is the effect for tantalium caps? or are they "never" aging?

[free_electron]

wet or dry tantalums ?

[vlf3]

They become very leaky, and start to short-out... this can cause slow to sudden power supply failure if used to de-couple pre-amp DC supply rails, normally they take out the DC supply resistors.

Other problems can be audio distortion, un-balancing of channels, low level sound, and intermittent crackling from channels, where Tantalum's are used in the signal processing.

[TimNJ]

Most new tantalums you see/buy today are dry type. They don't suffer from the issues of the wet types that were used in the late 70s/80s era.

[krivx]

Modern tantalums will let you know if you reverse bias them though. They'll heat up and fail faster than electrolytics in my experience.

[Mike Warren]

Modern tantalums will let you know if you reverse bias them though. They'll heat up and fail faster than electrolytics in my experience.

Yes, and if I hit my window with a hammer it no longer keeps the rain out.

The trick is to use items in a way they were designed to be used, or you may not get the performance you expect.

[sorin]

The trick is to use items in a way they were designed to be used, or you may not get the performance you expect.

 

[amyk]

They still make wet tantalums, but their price is...

[krivx]

Yes, and if I hit my window with a hammer it no longer keeps the rain out.

The trick is to use items in a way they were designed to be used, or you may not get the performance you expect.

It's a handy quick failure though, you'll spot it straight after assembly. Sometimes it's better that your window breaks when you hit it than breaking a day later during a blizzard.

[hifihifi]

thank for many respons
what about ESR and capacitance over time?