SEMICONDUCTOR

DCR1840Y85

6/9

www.dynexsemi.com

0

10

20

30

40

50

60

70

80

90

100

110

120

130

0

500

1000 1500 2000 2500 3000 3500

d.c.

180

120

90

60

30

0

10

20

30

40

50

60

70

80

90

100

110

120

130

0

500

1000 1500 2000 2500 3000 3500

d.c.

180

120

90

60

30

Fig.7 Maximum permissible case temperature,

double side cooled – rectangular wave

Fig.8 Maximum permissible heatsink temperature,

double side cooled – rectangular wave

0

5

10

15

20

25

0.001

0.01

0.1

1

10

100

Time ( s )

Double Side Cooling

Anode Side Cooling

Cathode Sided Cooling

1

2

3

4

0.612

1.7721

3.1053

2.8608

0.010332 0.056415 0.333082

1.6323

0.7009

1.9388

3.61

7.1383

0.011328 0.065993 0.419695

9.0612

Cathode side cooled

0.6728

2.0168

1.7306 18.6391

0.010954 0.065544

0.30379

5.7274

∆R

operates at conduction angles other than d.c.

Double side cooling

Anode Side Cooling

Cathode Sided Cooling

θ°

sine.

rect.

θ°

sine.

rect.

θ°

sine.

rect.

180

0.94

0.65

180

0.94

0.64

180

0.94

0.64

120

1.09

0.92

120

1.08

0.91

120

1.08

0.91

90

1.24

1.07

90

1.23

1.06

90

1.24

1.06

60

1.38

1.23

60

1.37

1.22

60

1.37

1.22

30

1.49

1.40

30

1.47

1.38

30

1.48

1.39

15

1.54

1.49

15

1.52

1.47

15

1.53

1.48

Fig.9 Maximum (limit) transient thermal impedance – junction to case (° C/kW)