NTC ID please.

I found lot's pf NTC Thermistors. Not sure how to interpret the 5D-9 marking. That is all the white papers say. This is the paper for the circuit.

http://www.cui.com/product/resource/pbk-3.pdf

Is MF72-5D9 the right part?

http://www.cantherm.com/media/productPDF/MF72_NOV_2012.pdf

Thank You

Instead of making us guess, what are you trying to do?

Is this meant as some kind of soft start for the power supply?

I'm just making a General Purpose 5v power supply to run my Atmega on a breadboard and run a opto isolator. Perhaps a few LED's and switches, and LM35. The whitepapers circuit that I'm asking about shows that it is a power supply. Sorry I thought that was obvious. I'm trying to understand what part they are calling for in there drawing.

This is the White Paper for the "Easy" switcmode IC I bought.

http://www.cui.com/product/resource/pbk-3.pdf

The circuit shown in it is what I am trying to build.

Thank You.

I like the power supply modules.

As for the NTC, NTC 5D-9 Circuit Protection Thermistors, Inrush Current Limiter Resistance: 5 Ohms, Max Steady State Current: 3.0 Amps Size: 9mm Diameter, Lead spacing 8.5mm

like this: http://www.uxcell.com/ntc-5d9-inrush-current-limiting-power-type-thermistor-100-pcs-p-128490.html

Thank You Sir :) Finally. Someone who isn't trying to sell me on a linear supply.

Trying to order from Digi-key so as to save on shipping. They have all the other parts etc.

Will this one work?

http://www.digikey.com/product-search/en?pv866=101&FV=fff4001e%2Cfff80044&k=thermistor&mnonly=0&newproducts=0&ColumnSort=0&page=1&stock=1&quantity=0&ptm=0&fid=0&pageSize=25

Thank You

That would be best posed to DigiKey parts assistance.
Not sure on there price but http://www.amazon.com/Current-Limiting-Thermistor-NTC-5D-9/dp/B009JJ5LFM but $8.75 is not bad.

The one I found is 2$ :) I contacted the OEM of the IC. Hopefully they will help me find a suitable replacement.