Panasonic Electronic Components' Power Choke Coils offer high heat resistance, excellent DC bias characteristic, Hi-BS With Ferrous alloy magnetic material and great reliability at high temperatures with a high tolerance for vibration. These Power Choke Coils also have very low audible noise and are extremely efficient with low DCR and eddy current loss reduction. For low DC resistance. The ETQ-P4 has a small size of 8.7 x 7 x 4 mm & 11.5 x 10 x 4 mm. It is compact with high power, can be used at high switching frequencies, has low audible noise, a gap-less structure and is EU-RoHS Compliant.