BD787 BD788

2

Motorola Bipolar Power Transistor Device Data

Characteristic

Symbol

Min

Max

Unit

OFF CHARACTERISTICS

Collector–Emitter Sustaining Voltage (1)

(IC = 10 mAdc, IB = 0)

VCEO(sus)

60

—

Vdc

Collector Cutoff Current

(VCE = 20 Vdc, IB = 0)

(VCE = 30 Vdc, IB = 0)

ICEO

—

100

µAdc

Collector Cutoff Current

(VCE = 80 Vdc, VBE(off) = 1.5 Vdc)

(VCE = 40 Vdc, VBE(off) = 1.5 Vdc, TC = 125°C)

ICEX

—

—

1.0

0.1

µAdc

mAdc

Emitter Cutoff Current

(VEB = 6.0 Vdc, IC = 0)

IEBO

—

1.0

µAdc

ON CHARACTERISTICS(1)

DC Current Gain

(IC = 200 mAdc, VCE = 3.0 Vdc)

(IC = 1.0 Adc, VCE = 3.0 Vdc)

(IC = 2.0 Adc, VCE = 3.0 Vdc)

(IC = 4.0 Adc, VCE = 3.0 Vdc)

hFE

40

25

20

5.0

250

—

—

—

—

Collector–Emitter Saturation Voltage

(IC = 500 mAdc, IB = 50 mAdc)

(IC = 1.0 Adc, IB = 100 mAdc)

(IC = 2.0 Adc, IB = 200 mAdc)

(IC = 4.0 Adc, IB = 800 mAdc)

VCE(sat)

—

—

—

—

0.4

0.6

0.8

2.5

Vdc

Base–Emitter Saturation Voltage

(IC = 2.0 Adc, IB = 200 mAdc)

VBE(sat)

—

2.0

Vdc

Base–Emitter On Voltage

(IC = 2.0 Adc, VCE = 3.0 Vdc)

VBE(on)

—

1.8

Vdc

DYNAMIC CHARACTERISTICS

Current–Gain — Bandwidth Product

(IC = 100 mAdc, VCE = 10 Vdc, f = 10 MHz)

fT

50

—

MHz

Output Capacitance

(VCB = 10 Vdc, IC = 0)

BD787

(f = 0.1 MHz)

BD788

Cob

—

—

50

70

pF

Small–Signal Current Gain

(IC = 200 mAdc, VCE = 10 Vdc, f = 1.0 kHz)

hfe

10

—

—

* Indicates JEDEC Registered Data

(1) Pulse Test; Pulse Width

v 300 µs, Duty Cycle v 2.0%.

Figure 2. Switching Time Test Circuit

500

0.04

Figure 3. Turn–On Time

IC, COLLECTOR CURRENT (AMP)

70

30

20

5.0

0.06

0.2

0.4

0.6

td @ VBE(off) = 5.0 V

VCC = 30 V

IC/IB = 10

TJ = 25°C

+ 11 V

0

+ 30 V

SCOPE

RB

– 4 V

tr, tf v 10 ns

DUTY CYCLE = 1.0%

RC

tr

7.0

10

1.0

4.0

D1 MUST BE FAST RECOVERY TYPE, e.g.:

1N5825 USED ABOVE IB [ 100 mA

MSD6100 USED BELOW IB [ 100 mA

FOR PNP TEST CIRCUIT, REVERSE ALL POLARITIES.

25

µs

– 9.0 V

D1

51

RB AND RC VARIED TO OBTAIN DESIRED CURRENT LEVELS

VCC

BD787 (NPN)

BD788 (PNP)

300

200

100

50

0.1

2.0