HCTC High Current Toroidal Chokes Signal Transformer / Bel HCTC High Current Toroidal Chokes are designed for suppressing high-frequency electrical noise with high efficiency and reliability. The chokes feature an open-frame design and offer high current capacity and excellent EMI suppression. The series features a solid carrier base for stable vertical PCB mounting and fixed-pin spacing for easy PCB insertion. Signal Transformer / Bel HCTC High Current Toroidal Chokes applications include EMI/RFI filtering for switch-mode power supplies (SMPS), LCD panels, computers, monitors, and DC-DC converters.