MJE171 datasheet(3/4 Pages) MOTOROLA | 3 AMPERE POWER TRANSISTORS COMPLEMENTARY SILICON 60-80 VOLTS 12.5 WATTS

3 page

MJE171 MJE172 MJE181 MJE182

Motorola Bipolar Power Transistor Device Data

t, TIME (ms)

0.01

0.02

0.05

1.0

2.0

5.0

100

200

0.1

0.5

0.2

1.0

0.2

0.1

0.05

θJC(t) = r(t) θJC

θJC = 10°C/W MAX

D CURVES APPLY FOR POWER

PULSE TRAIN SHOWN

READ TIME AT t1

TJ(pk) – TC = P(pk) θJC(t)

P(pk)

DUTY CYCLE, D = t1/t2

0.2

Figure 4. Thermal Response

0.5

D = 0.5

0.05

0.3

0.7

0.07

0.03

0.02

0.1

0.02

0.01

0 (SINGLE PULSE)

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

0.01

2.0

5.0

0.1

BONDING WIRE LIMITED

THERMALLY LIMITED @

TC = 25°C (SINGLE PULSE)

SECOND BREAKDOWN LIMITED

CURVES APPLY BELOW

RATED VCEO

Figure 5. MJE171, MJE172

500

µs

5.0 ms

1.0

5.0

3.0

2.0

1.0

100

µs

TJ = 150°C

VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)

0.01

Figure 6. MJE181, MJE182

MJE171

MJE172

0.02

0.05

0.2

0.5

5.0

3.0

2.0

1.0

100

2.0

5.0

0.1

1.0

0.02

0.05

0.2

0.5

100

µs

500

µs

5.0 ms

MJE181

MJE182

BONDING WIRE LIMITED

THERMALLY LIMITED @

TC = 25°C (SINGLE PULSE)

SECOND BREAKDOWN LIMITED

CURVES APPLY BELOW

RATED VCEO

TJ = 150°C

7.0

ACTIVE–REGION SAFE OPERATING AREA

There are two limitations on the power handling ability of a

transistor — average junction temperature and second

breakdown. Safe operating area curves indicate IC – VCE lim-

its of the transistor that must be observed for reliable opera-

tion; i.e., the transistor must not be subjected to greater

dissipation than the curves indicate.

The data of Figures 5 and 6 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)

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

Figure 4. At high case temperature, thermal limitations will

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

limitations imposed by second breakdown.

10K

IC, COLLECTOR CURRENT (AMPS)

500

300

200

100

Figure 7. Turn–Off Time

0.01

0.03 0.05

0.5

0.2

0.02

0.1

0.3

VCC = 30 V

IC/IB = 10

IB1 = IB2

TJ = 25°C

VR, REVERSE VOLTAGE (VOLTS)

100

Figure 8. Capacitance

5.0

3.0

2.0

1.0

0.5 0.7

TJ = 25°C

Cib

Cob

NPN MJE181/182

PNP MJE171/172

PNP MJE171/MJE172

NPN MJE181/MJE182

7.0

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