FEATURES
    Power dissipation
        PCM: 0.83 W (Tamb=25℃)
    Collector current
        ICM: -100 mA
    Collector-base voltage
        V(BR)CBO: BF421 -300 V
                            BF423 -250 V
    Operating and storage junction temperature range
        TJ, Tstg: -55°C to +150°C