BU808DFI
HIGH VOLTAGE FAST-SWITCHING
NPN POWER DARLINGTON
n STMicroelectronics PREFERRED
SALESTYPE
n NPN MONOLITHIC DARLINGTON WITH
INTEGRATED FREE-WHEELING DIODE
n HIGH VOLTAGE CAPABILITY ( > 1400 V )
n HIGH DC CURRENT GAIN ( TYP. 150 )
n U.L. RECOGNISED ISOWATT218 PACKAGE
(U.L. FILE # E81734 (N))
n LOW BASE-DRIVE REQUIREMENTS
n DEDICATED APPLICATION NOTE AN1184
APPLICATIONS
n COST EFFECTIVE SOLUTION FOR
HORIZONTAL DEFLECTION IN LOW END
TV UP TO 21 INCHES.
DESCRIPTION
The BU808DFI is a NPN transistor in monolithic
Darlington configuration. It is manufactured using
Multiepitaxial Mesa technology for cost-effective
high performance.

INTERNAL SCHEMATIC DIAGRAM
June 2000
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCBO Collector-Base Voltage (IE = 0) 1400 V
VCEO Collector-Emitter Voltage (IB = 0) 700 V
VEBO Emitter-Base Voltage (IC =0) 5 V
I
C
Collector Current 8 A
I
CM
Collector Peak Current (t
p
<5ms) 10 A
IB Base Current 3 A
I
BM
Base Peak Current (t
p
<5ms) 6 A
P
tot
Total Dissipation at T
c
=25
o
C52W
stg
Storage Temperature -65 to 150
o
C
Tj Max. Operating Junction Temperature 150
o
C
1
2
3
ISOWATT218
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