Features
• Capable of being mounted easily because of one
   point fixing type plastic molded package (Inter
   changeable with TO-3).
• Wide ASO because of on-chip ballast resistance.
• Good depenedence of fT on current and excellent
   high frequency responce.
  
The descriptions in parentheses are for the 2SB817 only :
   other descriptions than those in parentheses are common
   to the 2SB817 and 2SD1047.