<p>There is provided a means for effectively preventing the temperature rise of a bypass diode occurring when the diode is operating in a terminal box for a crystalline silicon solar battery panel. The means is characterized in that a Schottkey barrier diode is used as the bypass diode. The forward voltage drop of the Schottkey barrier diode preferably has a value less than or equal to a specific value at a specific junction temperature. In particular, as the Schottkey barrier diode, it is preferable to use a surface-mounted type of or a non-insulated type packaged diode.</p>
