Careful Fe-Si Iron Powder Core with Low Loss for Output Filter Chokes RoHS and REACH compliant iron-silicon powder cores designed for EMI suppression and power conversion applications. Product Overview Iron-Silicon Powder Cores are high-performance magnetic components manufactured by pressing insulated iron-silicon alloy powder, creating a uniform distributed air gap structure throughout the core. Their typical operating frequency ranges from 50 kHz to 500 kHz, with select