2 Line Common Mode Choke Surface Mount 90 Ohms @ 100 MHz 400mA DCR 190mOhm The ACM2012-900-2P-T002, manufactured by TDK, is a 2-line common mode filter that helps reduce electromagnetic interference (EMI) and radio-frequency interference (RFI) in electronic systems. It is built using a wire-wound chip structure and optimized for high-speed differential signals while maintaining low impact on the desired signal. Key Characteristics Component Type: Common Mode Choke / EMI Filter Lines: 2-line (for differential signal pairs) Impedance: 90 Ω @ 100 MHz Current Rating: up to 400 mA DC Resistance: ~190 mΩ max Voltage Rating: up to 50 V Package Size: 0805 (2.0 × 1.2 mm) Mounting: Surface Mount (SMD) Function Suppresses common-mode noise on signal lines Maintains low differential impedance, so signal integrity is preserved Helps systems pass EMI/EMC compliance In simple terms: It filters out noise without affecting the actual data signal. Typical Applications USB, HDMI, Ethernet lines High-speed communication interfaces Embedded systems and IoT devices Consumer electronics and industrial equipment LVDS and display interfaces #CommonPartsLibrary #Filter #ACM