DIYbanter - View Single Post - Need Negative Temp Coefficient Component for Xmas Lights Slow Turn-on

Maynard A. Philbrook Jr.

In article ,
says...

I was being lazy, had hoped for some part numbers g.

They call them "NTC Thermistors".

Look at Mouser, you need to estatemate the wattage
your light string uses so you can properly select the
correct one that will create the voltage drop you need
when cold and reduce down to it's minimum value when
hot.