SM2T STMicroelectronics, SM2T Datasheet - Page 3

• Manufacturer Part Number: SM2T
• Description: Transient Voltage Suppressor: TRANSIL
• Manufacturer: STMicroelectronics

Fig. 3: Average power dissipation versus ambient tem-
perature.
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Fig. 5: Thermal resistance junction to ambient versus
copper surface under tab.
250
200
150
100
Fig. 7: Clamping voltage versus peak pulse current (maxi-
mum values).
100.0
50
10.0
0
1.0
0.1
0.0
0
P(W)
Rth(j-a)(°C/W)
0
I (A)
PP
SM2T6V8A
0.2
5
25
Tamb(°C)
0.4
10
SM2T14A
Printed circuit board FR4,
recommended pad layout
0.6
10/1000µs
Tamb = Ttab
50
15
0.8
1.0
20
S(cm²)
SM2T18A
75
1.2
25
8/20µs
1.4
100
30
SM2T27A
1.6
35
1.8
125
T
V (V)
j
initial =25°C
CL
40
2.0
150
2.2
45
Fig. 6: Reverse leakage current versus junction tempera-
ture (typical values).
1.E+02
1.E+01
1.E+00
Fig. 4: Variation of thermal impedance junction to ambient
versus pulse duration.
1000.0
Fig. 8: Junction capacitance versus reverse voltage ap-
plied (typical values).
10000
1.E-01
1.E-02
100.0
1000
10.0
100
1.0
0.1
10
1.E-03
1
C(pF)
0
Zth(j-a)(°C/W)
I (nA)
R
V
R
=V
RM
1.E-02
25
1.E-01
50
1.E+00
V (V)
t (s)
Tj(°C)
SM2T6V8A
P
R
10
75
1.E+01
SM2T14A
100
SM2T18A
SM2T series
SM2T27A
1.E+02
S=0.135cm²
V
125
S=2cm²
osc
F=1MHz
T
=30mV
j
=25°C
RMS
1.E+03
3/5
150
100