One Cycle Surge Current; Temperature Characteristics; Heat Sink Area Vs. Load Current; Thermal Resistance Rth - Omron G3NA Manual

One Cycle Surge Current

The values shown by the solid line are for non-repetitive inrush currents.
Keep the inrush current below the values shown by the dotted line if it occurs repetitively.
G3NA-205B-UTU
60
40
20
0
10 30 50 100 200 500 1,000
Energized time (ms)
G3NA-275B-UTU
G3NA-475B-UTU
900
800
700
600
500
400
300
200
100
0
10 30 50 100 300
Energized time (ms)
Temperature
Characteristics
(for Must Operate
Voltage and Must
Release Voltage)
G3NA-2@@B-UTU AC input
40
20
0
−20
−40
−30 −20
0 20 40 60 80
Ambient temperature (°C)
Thermal Resistance Rth (Back of
Junction SSR) (Examples)
Model
G3NA-205B-UTU
G3NA-210B-UTU
G3NA-220B-UTU
G3NA-240B-UTU
G3NA-250B-UTU
G3NA-275B-UTU
G3NA-475B-UTU
G3NA-290B-UTU
G3NA-490B-UTU
G3NA-D210B-UTU
6
Solid State Relays
G3NA-210B-UTU
G3NA-410B-UTU
150
100
50
0
5,000 10 30 50 100 200 500 1,000
Energized time (ms)
G3NA-290B-UTU
G3NA-490B-UTU
1,200
1,000
800
600
400
200
0
1,000 10 30 50 100
Energized time (ms)
Heat Sink Area
vs. Load Current
G3NA-220B-UTU
3,000
2,000
Ambient Ambient
temperature 80°C temperature 40°C
1,000
700
500
300
200
100
70
50
30
20
100
0 2 4 6 8 10 12 14
Rth ( ° C/W)
3.22
2.62
1.99
0.45
0.45
0.45
2.62
G3NA
G3NA-220B-UTU
G3NA-425B-UTU
200
150
100
50
0
10 30 50 100 200
5,000
G3NA-D210B
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
300 1,000 10 20 30 50 70 100 200 300
Note: The heat sink area refers to the combined area
of the sides of the heat sink that radiate heat.
For example, when a current of 18 A is allowed
Aluminum plate
3.2 mm thick
to flow through the SSR at 40°C, the graph
shows that the heat sink area is about 450 cm
Therefore, if the heat sink is square, one side of
the heat sink must be 15 cm (
longer.
16 18 20 22 24
Load current (A)
Thermal Resistance Rth of Heat Sinks
(Examples)
Model
Y92B-N50
Y92B-N100
Y92B-N150
Y92B-A100
Y92B-A150N
Y92B-A250
Y92B-P250NF
Note: When using a commercially available heat sink, use one with a
thermal resistance equal to or less that the OMRON Heat Sink.
G3NA-240B-UTU/250B-UTU
G3NA-450B-UTU
400
300
200
100
0
500 1,000 5,000
10 30 50 100
Energized time (ms)
500 1,000 2,000
Energized time (ms)
450 (cm
Rth ( ° C/W)
200 500 1,000 5,000
Energized time (ms)
2
.
) or
2
)/2
2.8
1.63
1.38
1.63
1.37
1.00
0.46