[R-390] Correction NTC resistor

[David Wise]

Thanks, Tisha, I read straight through your original post and I guess I substituted NTC without even thinking.

Is it just me, or do the last few sentences in the datasheet (the conclusions from the worked-out example) seem to go counter to the table?

Reproduced here for convenience:

"Criteria indicates that either the CL-150 or CL-160 would be suitable for the application.
In the case of the CL-150 less heat is dissipated allowing the operating resistance to drop but at a higher temperature. This increases efficiency of the system but may lead to shorter component life."

Dave Wise

It seems to me that of the trio of {CL70,CL80,CL90}, the CL70 will have the lowest steady-state resistance... and therefore temperature.  The tradeoff is increased surge current.

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Tisha Hayes
Sent: Friday, January 24, 2014 11:51 AM
To: R390A
Subject: [R-390] Correction NTC resistor

Roy, K1LKY caught an error I made. The CL-90 is a NTC (negative temperature
coefficient) device.

<snip>

http://www.ge-mcs.com/download/temperature/920-325D-LR.pdf