80810 Datasheet, PDF (3/7 Pages) STMicroelectronics – 40A TRIACS

Table 6: Thermal resistance
Symbol
R_th(j-c) Junction to case (AC)
R_th(j-a) Junction to ambient
S = Copper surface under tab.
BTA40, BTA41 and BTB41 Series
Parameter
RD91 (Insulated) / TOP3
TOP3 Insulated
TOP3 / TOP3 Insulated
Value Unit
0.9
°C/W
0.6
50 °C/W
Figure 1: Maximum power dissipation versus
RMS on-state current (full cycle)
P(W)
50
40
30
20
10
0
0
IT(RMS)(A)
180°
α
α
5
10
15
20
25
30
35
40
Figure 2: RMS on-state current versus case
temperature (full cycle)
IT(RMS)(A)
45
40
35
30
25
20
15
10
5
0
0
25
BTA40 / BTB41
BTA41
α = 180°
TC(°C)
50
75
100
125
Figure 3: Relative variation of thermal
impedance versus pulse duration
1.E+00
K=[Zth/Rth]
Zth(j-c)
1.E-01
Zth(j-a)
BTA / BTB41
1.E-02
Figure 4: On-state characteristics (maximum
values)
400
100
ITM(A)
Tj max.
Vto = 0.85V
Rd = 10 mΩ
Tj = Tj max.
Tj = 25°C.
10
1.E-03
1.E-03
1.E-02
1.E-01
tp(s)
1.E+00
1.E+01 1.E+02
1.E+03
VTM(V)
1
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
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