°C Power Dissipation B Derate above 25oC PD 198 1.6 38.5 0.3 Junction and Storage Temperature Range TJ, TSTG -55 to 150 Maximum lead temperature for soldering purpose, 1/8" from case for 5 seconds Thermal Characteristics TL 300 Parameter Maximum Junction-to-Ambient A,D Maximum Case-to-sin.