Parametric fit for signal-line filtering
The TDK ACT45C-110-2P-TL000 is a two-line common mode filter from the ACT45C series, designed for signal-line EMI suppression on surface-mount boards. It delivers 600 Ohms impedance at 10 MHz, which is the frequency range where common-mode noise on data or sensor lines typically couples into the chassis ground. Rated for 250 mA continuous current at 50 V DC, with a maximum DC resistance of 600 mOhm — the DCR is the thermal bottleneck: at 250 mA the I²R loss is 37.5 mW, well within the part's dissipation capability, so no derating is needed for ambient temperatures up to 125 °C.
Package and board integration
The horizontal orientation keeps the profile low for tight board-stacking applications, and the four-pad layout provides mechanical stability during reflow.