SRF2012A-121YA is a common mode chip inductor from Bourns' SRF2012AA series designed for electromagnetic interference (EMI) suppression in high-frequency applications. The device features shielded, bifilar-wound construction with an impedance of 120 O at 100 MHz (±25% tolerance), a typical DC resistance of 0.20 O, and a rated current of 400 mA. It operates across a temperature range of -55°C to +125°C with a rated voltage of 50 VDC and withstanding voltage of 125 VDC, and is AEC-Q200 compliant, RoHS compliant, and halogen-free. This inductor is ideal for filtering common-mode noise in data lines, power supplies, and communication circuits where low radiation and reliable performance are essential.