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BD243C
BD244C

Complementary power transistors

Features
.

Complementary NPN-PNP devices

Applications
Power linear and switching
3
2
Description 1

TO-220
The device is manufactured in Planar technology
with "Base Island" layout. The resulting transistor
shows exceptional high gain performance
Figure 1. Internal schematic diagram
coupled with very low saturation voltage. The
PNP type is BD244C.

Table 1. Device summary
Order code Marking Package Packaging

BD243C BD243C
TO-220 Tube
BD244C BD244C

July 2007 Rev 5 1/10
www.st.com 10
Absolute maximum ratings BD243C BD244C

1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit
BD243C (NPN) BD244C (PNP)

VCBO Collector-base voltage (IE = 0) 100 V
VCEO Collector-emitter voltage (IB = 0) 100 V
VEBO Emitte-base voltage (IC = 0) 5 V
IC Collector current 6 A
ICM Collector peak current (tP < 5ms) 10 A
IB Base current 2 A
PTOT Total dissipation at Tc = 25