149

Revised: June 24, 2011 04:57 PM

©2011 Littelfuse, Inc

Specifications are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

40 Amp Alternistor (High Commutation) Triacs

Qxx40xx Series

Figure 1: Definition of Quadrants

Figure 3: Normalized DC Holding Current

vs. Junction Temperature

Figure 2: Normalized DC Gate Trigger Current for

All Quadrants vs. Junction Temperature

Figure 4: Normalized DC Gate Trigger Voltage for

All Quadrants vs. Junction Temperature

+125

0.0

1.0

2.0

3.0

4.0

-40

-15

10

35

60

85

110

Junction Temperature -- (°C)

+ 125

0.0

1.0

2.0

3.0

4.0

-40

-15

10

35

60

85

110

Junction Temperature - °C

+125

0.0

0.5

1.0

1.5

2.0

-40-

15

10

35

60

85

110

Junction Temperature - °C

MT2 POSITIVE

(Positive Half Cycle)

MT2 NEGATIVE

(Negative Half Cycle)

NOTE: Alternistors will not operate in QIV

MT1

MT2

GT

REF

QII

MT1

GATE

MT2

REF

MT1

MT2

REF

MT1

MT2

REF

QI

QIV

QIII

ALL POLARITIES ARE REFERENCED TO MT1

(

GATE

(+)

GATE

(

GATE

(+)

+

-

Note: Alternistors will not operate in QIV

0

5

10

15

20

25

30

35

40

45

0

4

8

12

16

20

24

28

32

36

40

RMS On-State Current [I

Figure 5: Power Dissipation (Typical)

vs. RMS On-State Current

Figure 6: Maximum Allowable Case Temperature

vs. On-State Current

50

60

70

80

90

100

110

120

130

0

5

10

15

20

25

30

35

40

45

50

RMS On-State Current [I