| 摘要 |
PROBLEM TO BE SOLVED: To provide a small reactor excellent in productivity.SOLUTION: The reactor 1α is used for a circuit component of a vehicle, and has one coil 2α, and a magnetic core 3α in which the coil 2α is arranged. The magnetic core 3α forms a closed magnetic circuit by an inside core portion 3i inserted in the coil 2α, and a connecting core portion 3o that covers at least a part of an outer periphery of the coil 2α. In a cross section S1 and a saturated magnetic flux density B1 of the inside core portion 3i, and a cross section S2 and a saturated magnetic flux density B2 of the connecting core portion 3o, 1.6T≤B1≤2.4T, 1.2≤(B1/B2)≤2.5, and 0.17×(B1/B2)+0.42≤(S1×B1)/(S2×B2)≤0.50×(B1/B2)+0.62 are satisfied. The cross section of the inside core portion 3i is made small by satisfying 1<(B1/B2). The reactor 1α can be made small by adjusting (S1×B1)/(S2×B2) to a specific range. |
