BU208A ® BU508A/BU508AFI
HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTORS
s STMicroelectronics PREFERRED SALESTYPES
s ...
BU208A ® BU508A/BU508AFI
HIGH
VOLTAGE FAST-SWITCHING NPN POWER TRANSISTORS
s STMicroelectronics PREFERRED SALESTYPES
s HIGH
VOLTAGE CAPABILITY (> 1500 V) s FULLY INSULATED PACKAGE (U.L.
COMPLIANT) FOR EASY MOUNTING
APPLICATIONS: s HORIZONTAL DEFLECTION FOR COLOUR
TV
DESCRIPTION The BU208A, BU508A and BU508AFI are manufactured using Multiepitaxial Mesa technology for cost-effective high performance and use a Hollow Emitter structure to enhance switching speeds.
1 2
TO-3
TO-218
33 22
1 ISOWATT218 1
INTERNAL SCHEMATIC DIAGRAM
For TO-3 : C = Tab E = Pin2.
ABSOLUTE MAXIMUM RATINGS
Symbol VCES VCEO V EBO IC ICM
Parameter Collector-Emit ter Volt age (VBE = 0) Collector-Emitter
Voltage (IB = 0) Emitt er-Base
Voltage (IC = 0) Collector Current Collector Peak Current (tp < 5 ms)
Ptot Vi so l
Tstg Tj
Total Dissipation at Tc = 25 oC Insulation W ithstand
Voltage (RMS) from All Three Leads to Exernal Heatsink St orage Temperature
Max. Operating Junction Temperature
BU208A TO - 3 150
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