The environment and board layout significantly influence which package you should buy:
When sourcing an inductor, these "sticky note" parameters are essential to match your design requirements: Inductance Value ( buy inductor
Higher DCR leads to more heat loss and decreased efficiency. Smaller physical inductors often have higher DCR because they use thinner wire. Core Material: Saturation Current ( Isatcap I sub s a
The continuous current the part can handle without overheating. Saturation Current ( Isatcap I sub s a t end-sub buy inductor
): Measured in Henrys (H), usually ranging from nanohenries (nH) to millihenrys (mH). It determines how much magnetic energy is stored and is typically chosen based on your "ripple budget". You must account for two distinct values:
The "workhorse" for power supplies and EV chargers due to high flux and low loss at several MHz.