Converter In-Rush Thermistors etc, UPDATE -4
UPDATE on 17 Nov, Update 2 on 22 Nov, Update 3 on 16 Jan 14, Update 4 on 19 Oct 14. --------------- In a recent thread there was mention of how you can wreck your gizmo (in my case a converter) ...
Forum Discussion
BFL13 wrote:
Interesting about the way the "mass" part of the thermistor works.
So what is the implication between these two, which are both 5R but 20a and 25a where both those amps are well above steady state 13a. The obvious difference is in the greater mass of the MS35, but would that be better? (I have managed to blow both types with hot restarts)
http://www.ametherm.com/datasheetspdf/MS355R025.pdf
http://www.ametherm.com/datasheetspdf/SL325R020.pdf
The MS35 5R025 is wider and thicker. Yes, it has the same resistance, but it can handle 600 Joules instead of 200. Note that the capacitance numbers are also exactly 3 times greater. They get the same resistance, but higher energy/capacitance numbers by using different semiconductor material so the net junction volume is greater, but the net resistance is the same. More junction volume with the same energy dissipated means less heating per junction region and less damage, so the ratings can be higher.
I don't know if I answered the question you asked, but it was my best shot. :)
