Omron G3NA - One Cycle Surge Current; Thermal Resistance; Thermal Resistance Rth (Back of Junction SSR); Thermal Resistance Rth of Heat Sinks

6 Solid State Relays G3NA
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.
Thermal Resistance Rth (Back of
Junction SSR) (Examples)
Thermal Resistance Rth of Heat Sinks
(Examples)
Note: When using a commercially available heat sink, use one with a
thermal resistance equal to or less that the OMRON Heat Sink.
60
40
20
0
5,0001,000500200100503010
Energized time (ms)
Inrush current (A peak)
150
100
50
0
5,0001,000500200100503010
Energized time (ms)
Inrush current (A peak)
200
150
100
50
0
5,0001,000500200100503010
Energized time (ms)
Inrush current (A peak)
400
300
200
100
0
5,0001,000500200100503010
Energized time (ms)
Inrush current (A peak)
G3NA-205B-UTU
G3NA-210B-UTU
G3NA-410B-UTU
G3NA-220B-UTU
G3NA-425B-UTU
G3NA-240B-UTU/250B-UTU
G3NA-450B-UTU
900
800
700
600
500
400
300
200
100
0
1,00010050 3003010
Energized time (ms)
Inrush current (A peak)
1,200
800
1,000
600
400
200
0
1,00010050 3003010
Energized time (ms)
Inrush current (A peak)
G3NA-275B-UTU
G3NA-475B-UTU
G3NA-290B-UTU
G3NA-490B-UTU
28
30
26
24
22
20
18
16
14
12
10
8
6
4
2
0
2,0001,000500200 30010050 70302010
Energized time (ms)
Inrush current (A peak)
G3NA-D210B
40
20
0
−20
−40
10
0
806040200−20−30
Ambient temperature (°C)
Variation rate (%)
3,000
2,000
1,000
700
500
300
200
100
70
50
30
20
242220181614121086420
Heat sink area (cm
2
)
Load current
(
A
)
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
to flow through the SSR at 40°C, the graph
shows that the heat sink area is about 450 cm
2
.
Therefore, if the heat sink is square, one side of
the heat sink must be 15 cm ( ) or
longer.
Ambient
temperature 80°C
Aluminum plate
3.2 mm thick
Ambient
temperature 40°C
450 (cm
2
)/2
Temperature
Characteristics
(for Must Operate
Voltage and Must
Release Voltage)
Heat Sink Area
vs. Load Current
G3NA-2@@B-UTU AC input
G3NA-220B-UTU
Model Rth (°C/W)
G3NA-205B-UTU 3.22
G3NA-210B-UTU 2.62
G3NA-220B-UTU 1.99
G3NA-240B-UTU 0.45
G3NA-250B-UTU 0.45
G3NA-275B-UTU
G3NA-475B-UTU
G3NA-290B-UTU
G3NA-490B-UTU
0.45
G3NA-D210B-UTU 2.62
Model Rth (°C/W)
Y92B-N50 2.8
Y92B-N100 1.63
Y92B-N150 1.38
Y92B-A100 1.63
Y92B-A150N 1.37
Y92B-A250 1.00
Y92B-P250NF 0.46