TISP4180
SYMMETRICAL TRANSIENT
VOLTAGE SUPPRESSORS
APRIL 1987 - REVISED SEPTEMBER 1997
THERMAL INFORMATION
THERMAL RESPONSE
I
RMS
- Maximum Non-Recurrent 50 Hz Current - A
100
TIS4MAA
MAXIMUM NON-RECURRENT 50 Hz CURRENT
vs
CURRENT DURATION
10
TIS4MAB
Z
θ
JA
- Transient Thermal Impedance - °C/W
10
1
1
V
GEN
= 250 V
RMS
0·1
R
GEN
= 20 to 1000 ohms
T
AMB
= 70°C
0·1
0·0001
0·001
0·01
0·1
1
10
100
1000
0·01
0·01
0·1
1
t - Current Duration - s
10
100
t - Power Pulse Duration - s
Figure 11.
Figure 12.
FREE AIR TEMPERATURE
DERATING CURVE
100
TIS4MAC
Percent of Rated Power - %
80
60
40
20
0
25
50
75
100
125
150
T
A
- Free Air Temperature - °C
Figure 13.
PRODUCT
INFORMATION
7
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