DCR4910W28 datasheet(6/10 Pages) DYNEX

Part #	DCR4910W28

Description	Phase Control Thyristor

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Manufacturer	DYNEX [Dynex Semiconductor]

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SEMICONDUCTOR

DCR4910W28

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Fig.7 Maximum permissible case temperature,

double side cooled

– rectangular wave

Fig.8 Maximum permissible heatsink temperature,

double side cooled

– rectangular wave

Fig.9 Maximum (limit) transient thermal impedance

– junction to case (°C/kW)

0

10

20

30

40

50

60

70

80

90

100

110

120

130

0

1000 2000 3000 4000 5000 6000 7000 8000

Mean on-state current, I

T(AV) - (A)

d.c.

180

120

90

60

30

0

10

20

30

40

50

60

70

80

90

100

110

120

130

0

1000 2000 3000 4000 5000 6000 7000 8000

Mean on-state current, I

T(AV) - (A)

d.c.

180

120

90

60

30

0

2

4

6

8

10

12

14

16

0.001

0.01

0.1

1

10

100

Time ( s )

Double Side Cooling

Anode Side Cooling

Cathode Sided Cooling

1

2

3

4

Double side cooled

Ri (°C/kW)

0.8816

1.2993

2.8048

1.3305

Ti (s)

0.0106818

0.058404

0.3584979

1.1285

Anode side cooled

Ri (°C/kW)

1.5197

3.2398

5.7622

0.6312

Ti (s)

0.0170581

0.2424644

6.013

15.364

Cathode side cooled

Ri (°C/kW)

1.4106

2.4667

6.7451

3.9054

Ti (s)

0.0158344

0.1786951

3.6201

6.196

Zth =

 [Ri x ( 1-exp. (t/ti))]

[1]

R

th(j-c) Conduction

Tables show the increments of thermal resistance Rth(j-c) when the device

operates at conduction angles other than d.c.

Double side cooling

Anode Side Cooling

Cathode Sided Cooling

Zth (z)

°

sine.

rect.

°

sine.

rect.

°

sine.

rect.

180

1.00

0.67

180

0.94

0.64

180

0.95

0.65

120

1.16

0.97

120

1.08

0.91

120

1.09

0.92

90

1.33

1.13

90

1.23

1.06

90

1.25

1.07

60

1.48

1.31

60

1.37

1.22

60

1.38

1.23

30

1.61

1.51

30

1.47

1.38

30

1.49

1.40

15

1.66

1.61

15

1.52

1.47

15

1.54

1.49

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