BD777 BD776 BD778 BD780

2

Motorola Bipolar Power Transistor Device Data

Characteristic

Symbol

Min

Max

Unit

OFF CHARACTERISTICS

Collector–Emitter Sustaining Voltage (1)

BD776

(IO = 10 mAdc, IB = 0)

BD777, BD778

BD780

VCEO(sus)

45

60

80

—

—

—

Vdc

Collector Cutoff Current

(VCE = 20 Vdc, IB = 0)

BD776

(VCE = 30 Vdc, IB = 0)

BD777, BD778

(VCE = 40 Vdc, IB = 0)

BD780

ICEO

—

—

—

100

100

100

µAdc

Collector Cutoff Current

(VCB = Rated, VCEO(sus), IE = 0)

(VCB = Rated, VCEO(sus), IE = 0, IC = 100°C)

ICBO

—

—

1.0

100

µAdc

Emitter Cutoff Current (VBE = 5.0 Vdc, IC = 0)

IEBO

—

1.0

µAdc

ON CHARACTERISTICS

DC Current Gain (IC = 2.0 Adc, VCE = 3.0 Vdc)

HFE

750

—

Collector–Emitter Saturation Voltage (IC = 1.5 Adc, IB = 6 mAdc)

VCE(Sat)

—

1.5

Vdc

Base Emitter Saturation Voltage (IC = 1.5 Adc, IB = 6 mAdc)

VBE(Sat)

—

2.5

Vdc

Base–Emitter On Voltage (IC = 1.5 Adc,VCE = 3 Vdc)

VBE(On)

—

2.3

Vdc

Output Diode Voltage Drop (IEC = 2.0 Adc)

VEC

—

2.0

Vdc

DYNAMIC CHARACTERISTICS

Current Gain Bandwidth Product (IC = 1.0 Adc, VCE = 2.0 Vdc)

fT

20

—

MHz

Symbol

Min

Typ

Unit

Turn–On Time (IC = 250 mA/VCE = 2 V)

BD775–777

BD776–778–780

ton

—

—

250

150

ns

Turn–Off Time (IC = 250 mA, VCE = 2 V)

BD775–777

BD776–778–780

toff

—

—

600

400

ns

Figure 2. Active Region Safe Operating Area

10

1.0

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

5.0

2.0

0.5

0.01

2.0

5.0

10

50

100

0.05

0.02

BD775, 776

BD777, 778

BD780

20

CURVES APPLY BELOW RATED VCEO

TJ = 150°C

dc

5.0 ms

1.0 ms

500

µs

100

µs

3000

Figure 3. Typical DC Current Gain

IC, COLLECTOR CURRENT (AMP)

100

0.2

0.3

0.5

0.7

1.0

2.0

5.0

1500

700

400

200

2000

1000

TJ = 25°C

VCE = 2.0 Vdc

1.0

0.1

30

70

500

300

BD776, 778, 780

777

4.0

3.0

3.0

7.0

BONDING WIRE LIMITED

THERMALLY LIMITED @ TC = 25°C

(SINGLE PULSE)

SECONDARY BREAKDOWN LIMITED

Figure 4. Darlington Circuit Schematic

BASE

PNP

BD776

BD778

BD780

COLLECTOR

EMITTER

[ 150

BASE

NPN

BD777

BD779

COLLECTOR

EMITTER

[ 150