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CUI Inc

│ SERIES: HSE-B20X │ DESCRIPTION: HEAT SINK

date 09/07/2017

│ page 3 of 5

PERFORMANCE CURVES (CONTINUED)

0

10

20

30

40

50

60

70

80

90

100

01

23

45

Dissipated Power (W)

67

89

10

Without Airflow

200 LFM

400 LFM

Heatsink Temperature Rise Above

Ambient (ΔT = Ths - Ta) (°C)

Power

(W)

Natural

Conv.

200 LFM

400 LFM

0

0

0

0

1

11.17

4.85

3.17

2

21.14

10.05

6.33

3

30.25

14.84

9.65

4

39.30

19.90

13.13

5

46.48

25.12

16.36

6

54.89

29.54

19.59

7

62.00

34.62

22.84

8

69.07

39.48

26.34

9

76.23

44.22

29.71

10

83.48

49.11

33.00

Ths: “hot spot” temperature measured on the heatsink

Ta: ambient temperature

HSE-B20500-040H

0

10

20

30

40

50

60

70

80

90

100

012

34

5

Dissipated Power (W)

67

89

10

Without Airflow

200 LFM

400 LFM

Heatsink Temperature Rise Above

Ambient (ΔT = Ths - Ta) (°C)

Power

(W)

Natural

Conv.

200 LFM

400 LFM

0

0

0

0

1

11.54

3.73

2.31

2

20.64

7.85

5.18

3

29.05

11.97

8.07

4

36.88

15.99

10.94

5

44.10

20.26

13.85

6

51.10

24.12

16.67

7

58.10

28.27

19.57

8

64.79

32.25

22.39

9

71.36

36.28

25.03

10

77.70

40.39

28.03

Ths: “hot spot” temperature measured on the heatsink

Ta: ambient temperature

HSE-B20630-040H

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