BUL39D
HIGH VOLTAGE FAST-SWITCHING
NPN POWER TRANSISTOR
a73 NPN TRANSISTOR
a73 HIGH VOLTAGE CAPABILITY
a73 MINIMUM LOT-TO-LOT SPREAD FOR
RELIABLE OPERATION
a73 VERY HIGH SWITCHING SPEED
a73 HIGH RUGGEDNESS
APPLICATIONS
a73 ELECTRONIC TRANSFORMERS FOR
HALOGEN LAMPS
a73 SWITCH MODE POWER SUPPLIES
DESCRIPTION
The BUL39D is manufactured using high voltage
Multi Epitaxial Planar technology to enhance
switching speeds while maintaining wide RBSOA.
The BUL series is designed for use in electronics
transformers for halogen lamps.
®
INTERNAL SCHEMATIC DIAGRAM
June 1998
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCES Collector-Emitter Voltage (VBE = 0) 850 V
V
CEO
Collector-Emitter Voltage (IB = 0) 450 V
V
EBO
Emitter-Base Voltage (IC = 0) 9 V
I
C
Collector Current 4 A
I
CM
Collector Peak Current (t
p
<5 ms) 8 A
I
B
Base Current 2 A
IBM Base Peak Current (tp <5 ms) 4 A
P
tot
Total Dissipation at Tc = 25
o
C70W
T
stg
Storage Temperature -65 to 150
o
C
T
j
Max. Operating Junction Temperature 150
o
C

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