Now I know when it comes to electrolytic capacitors it's usually good practice to use a voltage rating 1.5x - 2.5x the maximum rating you ever expect the capacitor to be exposed to, as the lifetime can be significantly reduced by running it near its limits.

But does the same protocol apply to ceramic capacitors? For example, assume a 25V ceramic capacitor - will running it at 24V reduce its lifespan significantly?

I'm currently designing a PSU which needs to be reliable, so at the moment I'm using 50V caps for a maximum 20V input (35V caps aren't available), but I'd like to switch to 25V caps if possible.


Question: Isn’t the FAQ label obsolete by now?
Answer: My own view of the topic is that the label FAQ is obsolete, for a number of reasons. To begin with, it’s an acronym which is bad in itself since new users of the web doesn't immediately get what it means. This means that a whole section, which could be useful, is lost altogether. Second it is not always frequently asked questions, but questions that content providers would like the users to read. In those cases it is more accurate to label the FAQ as help. 

Still, I'm part of a minority, both when it comes to answers and votes on this topic. The following graph (a snapshot from march 22nd) makes it clear to me that it isn't as easy as I first thought. The User Experience Stackexchange community is strongly against relabeling FAQ to something else.



My second question "How do we relabel it to suit both experienced and new users?" were answered by Hillier. His answer was to look at the some of the worlds leading websites such as Google, Facebook and Twitter, who doesn't use FAQ but just help. Their help content is extensive and not always in the Question and Answer form, thus it isn't a real FAQ section. 

If one are going to change the label, one could use double coding, using both the suggested "help" and the acronym "faq" together. Then new user would know what help is, and the more experienced user would know that the help section is in a form of frequently asked questions. Like the following:



NOTE: This is just an example and not a real suggestion of change to this site. If I would like to have a discussion of this sites' FAQ-label I would post it on meta.