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hfe, Small-Signal Current Gain
(Normalized)
Small-Signal Current Gain
f, Frequency (kHz)
V, Voltage (Volts)
“On” Voltage (1)
IC, Collector Current (Amperes)
IC, Collector Current (Amperes)
Active Region DC Safe Operating Area
VCE, Collector-Emitter Voltage (Volts)
Part Number Table
Description Part Number
Darlington Transistor, TO-3 MJ11015
There are two limitations on the power handling ability of
a transistor average junction temperature and secondary
breakdown. Safe operating area curves indicate IC- VCE
limits of the transistor that must be observed for reliable
operations e.g., the transistor must not be subjected to
greater dissipation than the curves indicate.
At high case temperatures, thermal limitations will reduce
the power that can be handled to values less than the
limitations imposed by secondary breakdown.
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