| 摘要 |
PROBLEM TO BE SOLVED: To enhance oil-leakage prevention effect in resin layers for coverage of a composite electronic component part by using urethane thermosetting resin, which can maintain liquid resin state with viscosity lower than a specified value under a specified temperature condition for a specified duration of time. SOLUTION: An impregnated electronic component contains an electronic component part 4 which is impregnated with oil in its outer case 5 having an opening on a face, then is covered by a resin layer 1 and is further covered by a resin layer 2 on the resin layer 1. The resin layer 1 is a urethane-resin having oil absorptivity, capable of maintaining liquid state with viscosity of 50 poises lower under 50 deg.C ambience for 10 minutes, and having hardness of D-40 (23 deg.C) per ASTM/D-2240. The resin layer 2, which covers the resin layer 1, is a urethane-resin having hardness of D-50 (23 deg.C). Outer electrode 3 are covered by the resin layer 1 on its surface contacting the resin layers with an embedded ratio of 80%. As a result, an electronic component having of non-deteriorated breakdown strength characteristic is obtained without causing deterioration in of the adhesion between the outer electrodes and the filled resin.
|
