Does anybody know the difference between these resistor types?


Cement:

http://futaba2008.en.made-in-china....IS/China-Cement-Resistor-RGW-RGF-Series-.html

http://www.tootoo.com/d-p11136860-Cement_Resistors/

Also googling "cement resistor" will bring thousands of results.



Ceramic:

http://speakerbug.com.au/shop/index.php?main_page=product_info&cPath=5&products_id=50

http://www.made-in-china.com/showro...PqJEruvSRfRA/China-Ceramic-Resistor-SQZ-.html


Thanks.

 

Since nothing about the composition is given and based on appearance only, I suspect they are the same.

You might find the definition of cement from Wikipedia interesting and perhaps related:

In the most general sense of the word, a cement is a binder, a substance which sets and hardens independently

Thus, the shell is probably a ceramic and the potting material used to secure the resistance element may correctly be called a cement. I see no reason the potting element could not also be a low-temperature ceramic.

John

 

Did you perhaps mean cermet- ceramic-metal resistor?

 

Did you perhaps mean cermet- ceramic-metal resistor?

No, some market resistors as "cement", wondering if these are same as ceramic though.

 

All the examples you refer to are high wattage wire-wound resistors in a ceramic/cement body. For all practical purposes they are all identical and whether they are called cement or ceramic seems to depend on the whim of the manufacturer/supplier.