HSS-B20-NPX-01 Datasheet, PDF (1/3 Pages) CUI INC – round or slot hole attachment options

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SERIES: HSS-B20-NPX-01 │ DESCRIPTION: HEAT SINK
FEATURES
• TO-220 package
• round or slot hole attachment options
• black andoized finish
• aluminum
date 03/30/2017
page 1 of 3
MODEL
mounting hole
type
size
(mm)
HSS-B20-NPR-01
round
Ø3.81
HSS-B20-NPS-01
slot
3.9 x 9.52
Note:
1. See performance curves for full thermal resistance details.
PERFORMANCE CURVES
@ 75°C ΔT,
nat conv
(°C/W)
17.74
17.74
thermal resistance¹
@ 1 W,
nat conv
(°C/W)
22.47
22.47
@ 1 W,
200 LFM
(°C/W)
5.88
5.88
@ 1 W,
400 LFM
(°C/W)
4.17
4.17
power
dissipation¹
@ 75°C ΔT,
nat conv
(W)
4.23
4.23
Heatsink Temperature Rise Above
Ambient (ΔT = Ths - Ta) (°C)
Power
(W)
Natural
Conv.
200 LFM 400 LFM
0
0
0
0
1
22.47
5.88
4.17
2
39.28
11.26
7.41
3
56.71
16.66
11.08
4
70.54
21.77
14.72
5
85.88
27.51
18.27
Ths: “hot spot” temperature measured on the heatsink
Ta: ambient temperature
100
90
Without Airflow
200 LFM
80
400 LFM
70
60
50
40
30
20
10
0
0
1
2
3
4
5
Heat Dissipated (W)
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