Soft magnetic alloy powder, magnetic core, magnetic component, and electronic device

A soft magnetic alloy powder comprising a component having a compositional formula ((Fe(1−(═+β))CoαNiβ)(1−γ)X1γ)(1−(a+b+c+d+e))BaPbSicCdCre in atomic ratio, wherein

• X1 comprises at least one selected from the group consisting of Ti, Zr, Hf, Nb, Ta, Mo, W, Al, Ga, Ag, Zn, S, Ca, Mg, V, Sn, As, Sb, Bi, N, O, Au, Cu, Mn, rare earth elements, and platinum-group elements;
• a, b, c, d, e, α, β, and γ of the compositional formula satisfy
• 0.020≤a≤0.200,
• 0≤b≤0.070,
• 0.020≤a+b≤0.200,
• 0≤c≤0.100,
• 0<d≤0.050,
• 0≤e≤0.040,
• 0.005≤α≤0.700,
• 0≤β≤0.200,
• 0≤γ≤0.030, and
• 0.790≤1−(a+b+c+d+e)≤0.900;
• the soft magnetic alloy powder comprises soft magnetic alloy particles including soft magnetic alloy particles having a particle size of (0.95×D90) or more and (1.05×D90) or less;
• an average Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.75 or more;
• and
• a variance of Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.035 or less.