STPS340U/S/B
THERMAL RESISTANCES
Symbol
R
th (j-l)
R
th (j-c)
Parameter
Junction to leads
Junction to case
SMC
SMB
DPAK
Value
20
25
5.5
°C/W
Unit
°C/W
STATIC ELECTRICAL CHARACTERISTICS
Symbol
Tests Conditions
I
R
*
Reverse leakage current
V
F
*
Forward voltage drop
Tests Conditions
Tj = 25°C
Tj = 125°C
Tj = 25°C
Tj = 25°C
Tj = 125°C
Tj = 125°C
Pulse test : * tp = 380
µs, δ
< 2 %
To evaluate the maximum conduction losses use the following equation :
P = 0.42 x I
F(AV)
+ 0.050 I
F2(RMS)
Min.
Typ.
2
V
R
= V
RRM
V
R
= V
RRM
I
F
= 3 A
I
F
= 6 A
I
F
= 3 A
I
F
= 6 A
0.52
0.63
Max.
20
10
0.63
0.84
0.57
0.72
Unit
µA
mA
V
Fig. 1:
Average forward power dissipation versus
average forward current.
PF(av)(W)
2.5
2.0
1.5
1.0
T
Fig. 2:
Average current
temperature
(δ
=0.5).
IF(av)(A)
versus
ambient
δ
= 0.1
δ
= 0.05
δ
= 0.2
δ
= 0.5
3.5
3.0
δ
=1
Rth(j-a)=Rth(j-c)
(DPAK)
2.5
2.0
1.5
1.0
tp
Rth(j-a)=65°C/W
Rth(j-a)=Rth(j-l)
(SMB/SMC)
T
0.5
0.0
0.0
IF(av) (A)
0.5
1.0
1.5
2.0
2.5
δ
=tp/T
0.5
4.0
3.0
3.5
0.0
δ
=tp/T
tp
Tamb(°C)
50
75
100
125
150
0
25
2/7
STMICROELECTRONICS [ STMICROELECTRONICS ]
