Kripton wrote:

105 deg is the maximum operating temperature before the capacitor
starts to dry
and loose capacity.

It is unlikely that a cap in a TV set will reach 105C and fail.

What is more likely is that it will reach 50C, especially if there is dust
blocking the vents and an 105C capacitor has a much better chance of
surviving operating at 50C than a capacitor rated 85C.

There may also be an assumption by the design department that some
capacitor manufacturers lie, and an 105C capacitor is really an 85C or
50C capacitor.

If you are reading this it is likely that you would say "if they lie
about the temperature rating, why would I buy from them?", while an
engineer in China who has to buy from a specific vendor would just
accept it and specify higher temp parts to compensate.


Or they just specify the capacitance and size of the cap and the manufacturer
supplies what they make with the 105C rating having absolutely no
significance at all.

Geoff.


--
Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379
It's Spring here in Jerusalem!!!