FEATURES
  Power dissipation
     PCM: 0.83 W (Tamb=25℃)
  Collector current
     ICM: 0.1 A
  Collector-base voltage
     V(BR)CBO: BF420 300 V
                   BF422 250 V
  Operating and storage junction temperature range
     TJ, Tstg: -55℃ to +150℃