This item is a set of 2 pieces vintage Bendix Power Transistor Marked 678-1 In TO-3 Package.

Maximum Power Dissipation = 90W

Maximum Collector-Base Voltage = 50V

Maximum Collector-Emitter Voltage = 20V

Maximum Collector Current = 15A

Max. Junction Temperature = 100°C

Minimum Gain (hfe)= 50

Transition Frequency = 0.2MHz