This is a similar type of question to this question about the use of the number 47.
I was looking at ordering some parts just like any other day and until now I've never really thought about it much, but I realised that the voltage ratings for capacitors seem really strange (to me at least).
The standard voltage ratings seem to be:
- 6.3 V
- 10 V
- 16 V
- 25 V
- 35 V
- 50 V
- 63 V
- 100 V
- 160 V
I've taken these values and plotted them on a graph to see if there was any correlation and it seems like there is an exponential correlation.
My actual questions are:.
- How were these values initially decided upon?
- Was/Is the voltage rating dictated by the material used and has just stuck over the years?
- Are there any other components out there that use the same voltage ratings?