QW-R213-001,A

FIG. 7 TEMPERATURE CURRENT (AMP)

FIG. 8 THERMAL RESPONSE

FIG. 9 ACTIVE REGION SAFE OPERATING AREA

There are two limitations on the power handling

ability of a transistor: average junction temperature and

second breakdown. Safe operating area curves

observed for reliable operation; i.e., the transistor must

not be subjected to greater dissipation than the curves

indicate.

variable depending on conditions. Second breakdown

pulse limits are valid for duty cycles to 10% provided

in Figure 8. At high case temperatures, thermal

limitations will reduce the power that can be handled to

values less than the limitations imposed by second

breakdown.