BD675 BD675A BD677 BD677A BD679 BD679A BD681
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ELECTRICAL CHARACTERISTICS (TC = 25C unless otherwise noted)
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Characteristic
Symbol
Min
Max
Unit
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OFF CHARACTERISTICS
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Collector–Emitter Breakdown Voltage(1) BD675, 675A
(IC = 50 mAdc, IB = 0) BD677, 677A
BD679, 679A
BD681
ÎÎÎ
ÎÎÎ
BVCEO
Î
Î
45
60
80
100
ÎÎ
ÎÎ
—
—
—
—
Î
Î
Vdc
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Collector Cutoff Current (VCE = Half Rated VCEO, IB = 0)
ICEO
—
500
µAdc
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Collector Cutoff Current
(VCB = Rated BVCEO, IE = 0)
(VCB = Rated BVCEO, IE = 0, TC = 100’C)
ÎÎÎ
ICBO
Î
—
—
ÎÎ
0.2
2.0
Î
mAdc
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ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Emitter Cutoff Current (VBE = 5.0 Vdc, IC = 0)
IEBO
—
2.0
mAdc
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ON CHARACTERISTICS
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DC Currert Gain(1)
(IC = 1.5 Adc,VCE = 3.0 Vdc) BD675, 677, 679, 681
(IC = 2.0 Adc, VCE = 3.0 Vdc) BD675A, 677A, 679A
ÎÎÎ
hFE
Î
750
750
ÎÎ
—
—
Î
—
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Collector–Emitter Saturation Voltage(1)
(IC = 1.5 Adc, IB = 30 mAdc) BD677, 679, 681
(IC = 2.0 Adc, IB = 40 mAdc) BD675A, 677A, 679A
ÎÎÎ
ÎÎÎ
VCE(sat)
Î
Î
—
—
ÎÎ
ÎÎ
2.5
2.8
Î
Î
Vdc
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Base–Emitter On Voltage(1)
(IC = 1.5 Adc, VCE = 3.0 Vdc) BD677, 679, 681
(IC = 2.0 Adc, VCE = 3 0 Vdc) BD675A, 677A, 679A
ÎÎÎ
VBE(on)
Î
—
—
ÎÎ
2.5
2.5
Î
Vdc
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DYNAMIC CHARACTERISTICS
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Small Signal Current Gain (IC = 1.5 Adc, VCE = 3.0 Vdc, f = 1.0 MHz)
hfe
1.0
—
—
(1) Pulse Test: Pulse Width 300 µs, Duty Cycle 2.0%.
Figure 2. DC Safe Operating Area
5.0
1.0
VCE, COLLECTOR-EMITTER VOLTAGE (VOLTS)
2.0
1.0
0.5
0.05 2.0 5.0 10 50 10
BONDING WIRE LIMIT
THERMALLY LIMIT at TC = 25°C
SECONDARY BREAKDOWN LIMIT
0.2
0.1
IC, COLLECTOR CURRENT (AMP)
TC = 25°C
BD675, 675A
BD677, 677A
BD679, 679A
BD681
20
There are two limitations on the power handling ability of
a transistor average junction temperature and secondary
breakdown. Safe operating area curves indicate IC – VCE
limits of the transistor that must be observed for reliable
operation; e.g., the transistor must not be subjected to greater
dissipation than the curves indicate.
At high case temperatures, thermal limitations will reduce
the power that can be handled to values less than the
limitations imposed by secondary breakdown.