Datasheet

Specifications are subject to change without notice (28.11.2018) 7
RAM..G
Heatsink Dimensions (load current versus ambient temperature)
RAM..100
RAM..125
Junction to ambient thermal resistance, R
th j-a
< 20.0 °C/W
Junction to case thermal resistance, R
th j-c
< 0.35 °C/W
Case to heatsink thermal resistance, R
th c-s
2
< 0.10 °C/W
Maximum allowable heatsink temperature 100 °C
Maximum allowable junction temperature 125 °C
Junction to ambient thermal resistance, R
th j-a
< 20.0 °C/W
Junction to case thermal resistance, R
th j-c
< 0.30 °C/W
Case to heatsink thermal resistance, R
th c-s
2
< 0.10 °C/W
Maximum allowable heatsink temperature 100 °C
Maximum allowable junction temperature 125 °C
RAM..25
Junction to ambient thermal resistance, R
th j-a
< 20.0 °C/W
Junction to case thermal resistance, R
th j-c
< 0.80 °C/W
Case to heatsink thermal resistance, R
th c-s
2
< 0.20 °C/W
Maximum allowable case temperature 100 °C
Maximum allowable junction temperature 125 °C
Junction to ambient thermal resistance, R
th j-a
< 20.0 °C/W
Junction to case thermal resistance, R
th j-c
< 0.50 °C/W
Case to heatsink thermal resistance, R
th c-s
2
< 0.20 °C/W
Maximum allowable case temperature 100 °C
Maximum allowable junction temperature 125 °C
T
A
Ambient temp. [°C]
Thermal resistance
[°C/W]
Load
current [A]
25.0 3.23 2.80 2.37 1.94 1.51 1.09 0.66
22.5 3.70 3.21 2.73 2.24 1.75 1.26 0.78
20.0 4.30 3.74 3.17 2.61 2.05 1.49 0.92
17.5 5.07 4.41 3.76 3.10 2.44 1.78 1.12
15.0 6.12 5.33 4.54 3.75 2.96 2.17 1.38
12.5 7.58 6.61 5.64 4.66 3.69 2.72 1.75
10.0 9.80 8.55 7.30 6.05 4.80 3.55 2.30
7.5 13.5 11.80 10.09 8.37 6.66 4.94 3.23
5.0 - 18.3 15.7 13.04 10.39 7.74 5.09
2.5 - - - - - 16.2 10.7
20 30 40 50 60 70 80
T
A
Ambient temp. [°C]
Thermal resistance
[°C/W]
Load
current [A]
RAM..50, 51
50.0 1.25 1.07 0.88 0.70 0.52 0.34 0.16
45.0 1.46 1.25 1.04 0.84 0.63 0.42 0.21
40.0 1.73 1.49 1.25 1.01 0.77 0.52 0.28
35.0 2.08 1.80 1.51 1.23 0.94 0.66 0.37
30.0 2.56 2.22 1.87 1.53 1.18 0.84 0.49
25.0 3.24 2.81 2.38 1.95 1.52 1.09 0.66
20.0 4.26 3.71 3.15 2.59 2.03 1.47 0.92
15.0 5.99 5.22 4.45 3.67 2.90 2.12 1.35
10.0 9.49 8.27 7.06 5.85 4.64 3.43 2.22
5.0 - 17.5 15.0 12.4 9.91 7.39 4.86
20 30 40 50 60 70 80
T
A
Ambient temp. [°C]
Thermal resistance
[°C/W]
Load
current [A]
100.0 0.60 0.52 0.43 0.34 0.26 0.17 0.09
90.0 0.74 0.64 0.54 0.44 0.34 0.24 0.14
80.0 0.91 0.79 0.68 0.56 0.45 0.33 0.22
70.0 1.09 0.96 0.82 0.68 0.55 0.41 0.27
60.0 1.33 1.16 1.00 0.83 0.66 0.50 0.33
50.0 1.66 1.45 1.24 1.04 0.83 0.62 0.41
40.0 2.16 1.89 1.62 1.35 1.08 0.81 0.54
30.0 3.01 2.64 2.26 1.88 1.51 1.13 0.75
20.0 4.73 4.14 3.55 2.96 2.37 1.78 1.18
10.0 9.94 8.70 7.45 6.21 4.97 3.73 2.48
20 30 40 50 60 70 80
T
A
Ambient temp. [°C]
Thermal resistance
[°C/W]
Load
current [A]
125.0 0.63 0.55 0.47 0.40 0.32 0.24 0.16
112.5 0.73 0.64 0.54 0.45 0.36 0.27 0.18
100.0 0.84 0.74 0.63 0.53 0.42 0.32 0.21
87.5 0.99 0.87 0.74 0.62 0.50 0.37 0.25
75.0 1.20 1.05 0.90 0.75 0.60 0.45 0.30
62.5 1.48 1.30 1.11 0.93 0.74 0.56 0.37
50.0 1.92 1.68 1.44 1.20 0.96 0.72 0.48
37.5 2.65 2.32 1.98 1.65 1.32 0.99 0.66
25.0 4.12 3.60 3.09 2.57 2.06 1.54 1.03
12.5 8.55 7.48 6.41 5.34 4.27 3.21 2.14
20 30 40 50 60 70 80