ACM-21-900M-T is a chip wire wound common mode choke featuring a compact 2.0 x 1.2 x 1.2 mm ferrite-based design with two-line wire wound construction. The device provides 90 O impedance (±20%) at 100 MHz with a maximum DC resistance of 0.30 O and supports a rated current of 400 mA at 50 Vdc. It exhibits high common-mode impedance at noise frequencies and low differential-mode impedance at signal frequencies, making it suitable for high-speed differential signal applications. The component is ideal for EMI and noise suppression in USB line filters, IEEE 1394 interfaces, and LVDS applications for LCD panels, with an operating temperature range of -40°C to +85°C and RoHS compliance.