TIP140 datasheet(5/7 Pages) ONSEMI

5 / 7 page

TIP140, TIP141, TIP142, (NPN); TIP145, TIP146, TIP147, (PNP)

http://onsemi.com

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

limits of the transistor that must be observed for reliable

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

dissipation than the curves indicate.

The data of Figure 6 is based on TJ(pk) = 150_C; TC is

variable

depending

conditions.

high

case

temperatures, thermal limitations will reduce the power that

can be handled to values less than the limitations imposed by

second breakdown.

SECONDARY BREAKDOWN LIMIT

BONDING WIRE LIMIT

THERMAL LIMITATION @ TC = 25°C

Figure 6. Active−Region Safe Operating Area

VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS)

2.0

0.2

5.0

1.0

TJ = 150°C

TIP140, 145

3.0

7.0

100

TIP141, 146

TIP142, 147

1.0

2.0

5.0

7.0

Figure 7. Unclamped Inductive Load

L, UNCLAMPED INDUCTIVE LOAD (mH)

0.5

1.0

2.0

5.0

100

100 mJ

INPUT

MPS−U52

RBB1

1.5k

RBB2

= 100

VBB2 = 0

VBB1 = 10 V

TUT

VCE MONITOR

100 mH

VCC = 20 V

MONITOR

RS = 0.1

TEST CIRCUIT

NOTE 1: Input pulse width is increased until ICM = 1.42 A.

NOTE 2: For NPN test circuit reverse polarities.

INPUT

VOLTAGE

COLLECTOR

CURRENT

1.42 A

VCE(sat)

−20 V

COLLECTOR

VOLTAGE

V(BR)CER

≈ 7.0 ms (SEE NOTE 1)

5.0 V

100 ms

VOLTAGE AND CURRENT WAVEFORMS

Figure 8. Inductive Load

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