Re: NTC 5D-9 Thermistor?



Bob Shuman wrote:
> ...... the piece I missed in the spec
> sheet is the maximum 3A in rush current. Where was this specified?

http://www.skceramic.com/pro-ntc_power_kr.htm
Column labeled 'at 25ºC (A)' - 3A
25ºC is the starting temperature and thus the 3A must be the inrush
current, or at least this is the way I read it.

> I think you've hit upon why the part exploded and burned up. It
> appears it was indeed undersized for the application. So from their
> listing, which part has the higher in rush current limit? Again, I
> did not see this specified in the part list table. Thanks in advance.

I would replace it with a NTC 5D-18 which has a 7A current rating.


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