IS Ultra-Low Profile Power Resistors Ohmite IS Ultra-Low Profile Power Resistors are rugged ultra-low profile thick film components with a resistance range from 5Ω to 10KΩ. The IS Series Power Resistors from Ohmite offer heatsink capability under the proper conditions and a high power range of 175W to 270W. The resistors also feature pulse handling capability, low inductances, non-flammability, and fast-on terminals and leads.