MJH6282 MJH6283 MJH6284 MJH6285 MJH6286 MJH6287

3

Motorola Bipolar Power Transistor Device Data

Figure 4. Thermal Response

t, TIME (ms)

1.0

0.01

0.03

0.7

0.2

0.1

0.05

0.02

0.05

1.0

3.0

5.0

10

30

50

100

300

500

R

θJC(t) = r(t) RθJC

R

θJC = 0.78°C/W MAX

D CURVES APPLY FOR POWER

PULSE TRAIN SHOWN

READ TIME AT t1

TJ(pk) – TC = P(pk) R

θJC(t)

P(pk)

t1

t2

DUTY CYCLE, D = t1/t2

D = 0.5

SINGLE PULSE

0.1

0.5

0.2

1000

0.5

0.3

0.07

0.03

0.01

0.02

2.0

20

200

0.3

0.2

0.1

0.05

0.02

0.01

SECOND BREAKDOWN LIMIT

BONDING WIRE LIMITED

THERMAL LIMITATION

SINGLE PULSE

TJ = 150°C

0.5 ms

Figure 5. MJH6282, MJH6285

Figure 6. MJH6283, MJH6286

Figure 7. MJH6284, MJH6287

dc

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

2.0

50

2.0

0.1

5.0

10

10

0.5

50

0.2

5.0

20

1.0

20

100

0.05

TJ = 150°C

dc

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

2.0

50

2.0

0.1

5.0

10

10

0.5

50

0.2

5.0

20

1.0

20

100

0.05

TJ = 150°C

dc

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

2.0

50

2.0

0.1

5.0

10

10

0.5

50

0.2

5.0

20

1.0

20

100

0.05

1.0 ms

5.0 ms

0.1 ms

0.5 ms

1.0 ms

5.0 ms

0.1 ms

0.5 ms

1.0 ms

5.0 ms

0.1 ms

SECOND BREAKDOWN LIMIT

BONDING WIRE LIMITED

THERMAL LIMITATION

SINGLE PULSE

SECOND BREAKDOWN LIMIT

BONDING WIRE LIMITED

THERMAL LIMITATION

SINGLE PULSE

FBSOA, FORWARD BIAS SAFE OPERATING AREA

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

0

50

60

10

20

80

40

40

10

DUTY CYCLE = 10%

30

20

30

110

100

0

Figure 8. Maximum RBSOA, Reverse Bias

Safe Operating Area

L = 200

µH

IC/IB ≥ 100

TC = 25°C

VBE(off) = 0 – 5.0 V

RBE = 47 Ω

MJH6282, 6285

MJH6283, 6286

MJH6284, 6287

FORWARD BIAS

There are two limitations on the power handling ability of a

transistor: average junction temperature and second break-

down. Safe operating area curves indicate IC – VCE limits of

the transistor that must be observed for reliable operation;

i.e., the transistor must not be subjected to greater dissipa-

tion than the curves indicate.

The data of Figure 5, 6 and 7 is based on TJ(pk) = 150_C;

TC is variable depending on conditions. Second breakdown

pulse limits are valid for duty cycles to 10% provided TJ(pk)

v 150 _C. TJ(pk) may be calculated from the data in

Figure 4. At high case temperatures, thermal limitations will

reduce the power that can be handled to values less than the

limitations imposed by second breakdown.