Abstract: The present invention concerns a brushless electric machine with a rotor having interior permanent magnets, characterised in that the rotor consists of a tubular core (1), said core (1) having N pairs of longitudinal slots (2, 3) having trapezoidal cross-section, a width La and a length L, where La/L is between 0.25 and 0.35, the two slots (2, 3) of a pair extending on either side of the median radial plane, at an angle of 7.5°±1.5°, the core having, in the region of convergence of each pair of slots, a longitudinal channel (10) opening on either side of the front ends of the core (1).

Abstract: The invention relates to an electronic component (1) comprising at least one semiconductor chip (4) and at least one substrate (6), the semiconductor chip (4) being encapsulated in a polyorganosiloxane resin (3), which is the result of hardening a composition comprising at least: one portion (A) comprising at least one polyorganosiloxane (A1) which contains at least two —CH?CH2 reactive groups per molecule; one portion (B) comprising a polyorganosiloxane (B1) which comprises at least two Si—H groups per molecule; and at least one hydrosilation catalyst (C1), the components (A1) and (B1) being in quantities such that the molar ratio of Si—H/—CH?CH2 in the composition is no lower than 0.4.