| 主权项 |
1. A photocoupler, comprising:
an inner resin including a base resin and a curing agent, the base resin including isocyanuric acid having an epoxy group, the curing agent including an acid anhydride having an acid anhydride group, a mole ratio of the acid anhydride group to the epoxy group being not less than 0.67 and not more than 0.8, the inner resin containing an internal lubricant wax having high polarity and a fatty acid, and a second external lubricant wax having low polarity; a light emitting element provided in the inner resin; a light receiving element provided in the inner resin; and an outer resin provided around the inner resin, the outer resin containing a first external lubricant wax having low polarity. |
