RD1/4W4R7JTA1 with carbon film resistors Axial, 2.4x6.5mm RoHS manufactured by Tyohm is an axial lead, 1/4 watt rated, 4.7 ohm resistor with an accuracy rating of A1. It is a carbon film type manufactured by Tyohm, and is available in an 2.4x6.5mm size. The resistor is RoHS compliant, meaning it is free of hazardous materials such as mercury, lead, cadmium, and hexavalent chromium.