Doug, Refractory Ceramic Fibers (RCF) look very much like white cotton fibers, except that they are stiffer. They are used as insulation for heaters, temperature chambers, etc. Look for them in your products around tanks, heaters, and the like. They will usually be either wrapped in foil or contained within a metal shroud. Another place they are used is around temperature stabilized (oscillator) crystals - referred to as a crystal oven assembly.
The other applications you mentioned may possibly contain RCF. You should check with your suppliers. If it is whitish in color and won't melt or burn with a cigarette lighter, it should be suspected. Nomex is a pale brownish-yellow in color. I doubt that the transistor pads would contain RCF, an insulator, since their function is to transfer heat. Good Hunting Scott ==ORIGINAL MESSAGE== "Recently one of our customers sent the email at the bottom of the page about RCF. To be perfectly honest I am not familiar with what types of materials or products might contain RCF. My understanding is that RCF are used for very high temperature insulation, much higher than regular fiberglass is able to support. Intuitively I believe that these fibers might be found in applications that use paper-like insulation, braided tubing, possibly transistor gap-pads or sil-pads." --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
