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公开(公告)号：US20210166844A1
公开(公告)日：2021-06-03
申请号：US16770694
申请日：2019-02-01
摘要： An insulating film includes: a resin consisting of a polyimide, a polyamide-imide, or a mixture thereof; and α-alumina single crystal particles having an average particle diameter in a range of 0.3 μm or more and 1.5 μm or less, in which an amount of the α-alumina single crystal particles is in a range of 8% by volume or more and 80% by volume or less. An insulated conductor includes: a conductor; and an insulating film provided on a surface of the conductor, in which the insulating film consists of the insulating film. A metal base substrate includes a metal substrate, an insulating film, and a metal foil which are laminated in this order, in which the insulating film consists of the insulating film.
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