These are N-Channel power MOSFETs manufactured using the MegaFET process. This process, which uses feature sizes approaching those of LSI circuits, gives optimum utilization of silicon, resulting in outstanding performance. They were designed for use in applications such as switching regulators, switching converters, motor drivers and relay drivers. These transistors can be operated directly from integrated circuits.
Formerly developmental type TA78440.

FEATUREs
• 70A, 60V
• rDS(on) = 0.014Ω
• Temperature Compensated PSPICE® Model
• Peak Current vs Pulse Width Curve
• UIS Rating Curve (Single Pulse)
• 175oC Operating Temperature
• Related Literature
   - TB334 “Guidelines for Soldering Surface Mount Components to PC Boards”