BUH315
HIGH VOLTAGE FAST-SWITCHING
NPN POWER TRANSISTOR
n STMicroelectronics PREFERRED
SALESTYPE
n HIGH VOLTAGE CAPABILITY
n U.L. RECOGNISED ISOWATT218 PACKAGE
(U.L. FILE # E81734 (N)).
APPLICATIONS:
n HORIZONTAL DEFLECTION FOR COLOUR
TV
n SWITCH MODE POWER SUPPLIES
DESCRIPTION
The BUH315 is manufactured using Multiepitaxial
Mesa technology for cost-effective high
performance and uses a Hollow Emitter structure
to enhance switching speeds.
The BUH series is designed for use in horizontal
deflection circuits in televisions and monitors.

INTERNAL SCHEMATIC DIAGRAM
November 1999
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCBO Collector-Base Voltage (IE = 0) 1500 V
V
CEO
Collector-Emitter Voltage (I
B
= 0) 700 V
V
EBO
Emitter-Base Voltage (I
C
=0) 10 V
IC Collector Current 6 A
I
CM
Collector Peak Current (t
p
<5ms) 12 A
I
B
Base Current 3 A
I
BM
Base Peak Current (t
p
<5ms) 5 A
Ptot Total Dissipation at Tc =25
o
C44W
stg
Storage Temperature -65 to 150
o
C
T
j
Max. Operating Junction Temperature 150
o
C
1
2
3
ISOWATT218
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