ACR2900VR45 datasheet(5/8 Pages) DYNEX

Part #	ACR2900VR45

Description	Bypass Thyristor

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Manufacturer	DYNEX [Dynex Semiconductor]

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SEMICONDUCTOR

ACR2900VR45

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www.dynexsemi.com

Fig.4

Maximum (limit) transient thermal impedance

– junction to case (°C/kW)

0

2

4

6

8

10

12

14

16

18

20

0.001

0.1

10

Time ( s )

Double Side

Cooling

Anode Side

Cooling

Cathode Sided

Cooling

1

2

3

4

Double side cooled

Ri (°C/kW)

0.9206

1.8299

3.4022

1.3044

Ti (s)

0.0076807

0.0579454

0.4078613

1.2085

Anode side cooled

Ri (°C/kW)

0.9032

1.6719

3.0101

7.4269

Ti (s)

0.0075871

0.0536531

0.3144537

5.624

Cathode side cooled

Ri (°C/kW)

0.9478

2.0661

1.6884

13.0847

Ti (s)

0.0078442

0.0645541

0.3894389

4.1447

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

1.34

0.88

180

1.34

0.88

180

1.33

0.88

120

1.57

1.30

120

1.57

1.30

120

1.57

1.29

90

1.83

1.54

90

1.84

1.54

90

1.83

1.53

60

2.08

1.81

60

2.08

1.81

60

2.07

1.80

30

2.27

2.11

30

2.28

2.11

30

2.26

2.10

15

2.36

2.28

15

2.37

2.28

15

2.35

2.26

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