BFX34
SILICON NPN TRANSISTOR
STMicr o electronics PREF E RRED
SALESTYPE
NPN TRANSIS TOR
DESCRIPTION
The BFX34 is a silicon Epitaxial Planar NPN
transistor in Jedec TO-39 metal case, intented for
high current applications.
Very low saturation voltage and high speed at
high current levels make it ideal for power drivers,
power amplifiers, switching power supplies and
relay drivers invert ers .
INT E R NAL SCH E M ATI C DIAG RA M
August 2001
TO-39
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCBO Collector-Base Voltage (IE = 0) 120 V
VCEO Collector-Emitter Voltage (IB = 0) 60 V
VEBO Emitter-Base Voltage (IC = 0) 6 V
ICCollector Current 5 A
Ptot Total Dissipation at Tcase 25 oC
Tamb 25 oC5
0.87 W
W
Tstg Storage Temp erature -65 to 200 oC
TjMax. Operating Junctio n Te mperature 200 oC
®
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THERMAL DATA
Rthj-case
Rthj-amb Thermal Resistance Junction-case Max
Thermal Resistance Junction-amb Max 35
200
oC/W
oC/W
ELE CT RICAL CHAR ACT ERISTICS (Tcase = 25 oC unless otherwise specified)
Symbol Pa ra meter Test Conditions Min. Typ. Max. Unit
ICES Collector Cut-off
Current (VBE = 0) VCE = 60 V 0.02 10 µA
IEBO Emitter Cut-off Current
(IC = 0) VEB = 4 V 0.05 10 µA
V(BR)CBOCollector-base
Breakdown Voltage
(IE = 0)
IC = 5 mA 120 V
VCEO(sus)Collector-Emitter
Sustaining Voltage
(IB = 0)
IC = 100 mA 60 V
VEBOEmitter-base Voltage
(IC = 0) IE = 1 mA 6 V
VCE(sat)Collector-Emitter
Saturation Voltage IC = 5 A IB = 0.5 A 0.4 1 V
VBE(sat)Base-Emitter
Saturation Voltage IC = 5 A IB = 0.5 A 1.3 1.6 V
hFEDC Current Gain IC = 1 A VCE = 2 V
IC = 1.5 A VCE = 0.6 V
IC = 2 A VCE = 2 V 40
100
75
80 150
fTTransition Frequency IC = 0.5 A VCE = 5 V
f = 20 MHz 70 100 MHz
CEBO Emitter-base
Capacitance IC = 0 VEB = 0.5 V
f = 1 MHz 300 500 pF
CCBO Collector-base
Capacitance IE = 0 VCB = 1 0 V
f = 1 MHz 40 100 pF
ton
toff
RESISTIVE LOAD
Turn-on Time
Turn-off Time IC = 0.5 A VCC = 20 V
IB1 = -IB2 = 0.5 A 0.6
0.6 0.25
1.2 µs
µs
P ulsed: P ulse duratio n = 300 µs, duty cycle 1.5 %
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DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 12.7 0.500
B0.490.019
D6.60.260
E8.50.334
F9.40.370
G 5.08 0.200
H1.20.047
I0.90.035
L45
o
(typ.)
L
G
I
D A
F
E
B
H
P008B
TO-39 MECHANICAL DATA
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