Datasheet

2 Specifications are subject to change without notice (02.10.2003)
RM1C
Output Specifications
RM1C...25 RM1C...50
Rated operational current
AC51 @ Ta=25°C 25 Arms 50 Arms
AC56a @ Ta=25°C 10 Arms 20 Arms
Min. operational current 150 mA 150 mA
Rep. overload current t=1 s 55 A 125 A
Non-rep. surge current t=10 ms 250 A
p
600 A
p
Off-state leakage current @
rated voltage and frequency < 3 mA < 3 mA
I
2
t for fusing t=1-10 ms < 310 A
2
s < 1800 A
2
s
Critical dI/dt @ 50 Hz 100 A/µs 100 A/µs
On-state voltage drop @ rated current 1.4 Vrms 1.4 Vrms
Critical dV/dt off-state min. 2kV/µs 2kV/µs
Input Specifications
Control voltage 4.25 - 32 VDC
Pick up voltage 4.0 VDC
Drop out voltage 3.0 VDC
Max. input current 18 mA
Response time pick up
Power output 14 ms
Response time drop out
Power output 10 ms
Heatsink Dimensions (load current versus ambient temperature)
RM1C...25
2.70 2.34 1.98 1.61 1.25 0.89
3.10 2.69 2.28 1.86 1.45 1.04
3.61 3.13 2.65 2.18 1.70 1.23
4.26 3.70 3.14 2.59 2.03 1.47
5.14 4.47 3.80 3.14 2.47 1.80
6.38 5.56 4.73 3.91 3.09 2.27
8.25 7.19 6.14 5.08 4.02 2.97
11.4 9.94 8.49 7.04 5.59 4.14
17.7 15.4 13.2 11.0 8.74 6.51
- - - - 18.2 13.6
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
Load
current [A]
Thermal resistance
[K/W]
T
A
Ambient temp. [°C]
Power
dissipation [W]
28
24
21
18
15
12
9
7
4
2
20 30 40 50 60 70
RM1C...50
1.03 0.86 0.70 0.53 0.37 0.20
1.27 1.09 0.90 0.71 0.52 0.33
1.54 1.32 1.10 0.89 0.67 0.45
1.85 1.59 1.34 1.08 0.82 0.57
2.26 1.95 1.65 1.34 1.03 0.72
2.85 2.47 2.08 1.70 1.32 0.94
3.73 3.24 2.75 2.26 1.77 1.27
5.22 4.54 3.86 3.19 2.51 1.83
8.21 7.16 6.11 5.05 4.00 2.95
17.2 15.0 12.9 10.7 8.51 6.33
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
Load
current [A]
Thermal resistance
[K/W]
T
A
Ambient temp. [°C]
Power
dissipation [W]
61
53
46
39
33
26
20
15
10
5
20 30 40 50 60 70
Junction to ambient thermal resistance, R
th j-a
< 20.0 K/W
Junction to case thermal resistance, R
th j-c
< 0.80 K/W
Case to heatsink thermal resistance, R
th c-s
< 0.20 K/W
Maximum allowable case temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
Junction to ambient thermal resistance, R
th j-a
< 20.0 K/W
Junction to case thermal resistance, R
th j-c
< 0.50 K/W
Case to heatsink thermal resistance, R
th c-s
< 0.20 K/W
Maximum allowable case temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
Functional Diagram
3
4
2
1
Control
Input
Line/Load
Input
Regulation
Peak
Control