3.3 µH drum-core wirewound for power and signal filtering
The Murata LQH32CH3R3M53L is a 3.3 µH drum-core wirewound inductor in the LQH32 series, built on a ferrite core and unshielded. It is rated for 710 mA DC current with a maximum DC resistance of 156 mOhm, so the resistive voltage drop at full rated current is about 111 mV — a factor to budget in low-voltage rails. The self-resonant frequency of 50 MHz means the inductor maintains its inductive impedance up to that point; above 50 MHz the parasitic capacitance dominates and the part behaves like a capacitor. This makes it suitable for DC-DC converter output filters and low-frequency EMI suppression where the switching fundamental stays well below 50 MHz. The 1210 (3225 Metric) footprint is a common size for automated pick-and-place assembly.