ETQ-P Power Choke Coils Panasonic Electronic Components ETQ-P Power Choke Coils feature high inductance of 109nH to 100µH (no saturation performance limitation due to its metal dust core), low loss due to low RDC (using flat wire), and low buzz noise due to its gapless structure. These high-power inductors offer a surface-mount design with a profile as low as 3mm. Panasonic Electronic Components ETQ-P Power Choke Coils are recommended for DC-DC converters for CPUs in PCs as well as thin on-board power supply modules for servers. Automotive versions are also offered.