The object of the present invention is to provide a diode that acts as a cell string bypass diode or a reverse-current preventive diode, has excellent heat dissipativity, and are preferably sealed integrally in a solar cell module. An N terminal 11 has an N substrate part 12 having an even thickness of 0.8 mm or more, an N thin part 13, which is one thin part, and an N connecting wire receiving part 14, which is the other thin part. A P terminal 21 has a P substrate part 22, a P thin part 23, and a P connecting wire receiving part 24. In a state where said diode chip 31 is connected, the thickness of the entire lead terminal is almost the same as that of the substrate part, i.e. the terminal, and the total of plane area of the N substrate part and that of the P substrate part is 200 mm 2 or more. Said diode, together with the solar cell, is sealed between a front surface material and a rear surface material where the solar cell is to be sealed.