SM8A27 Datasheet, PDF (2/2 Pages) General Semiconductor – SURFACE MOUNT AUTOMOTIVE TRANSIENT VOLTAGE SUPPRESSOR

RATINGS AND CHARACTERISTIC CURVES SM8A27
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
FIG. 1 - POWER DERATING CURVE
25 50 75 100 125 150 175 200
CASE TEMPERATURE, ¡C
FIG. 3 - PULSE WAVEFORM
150
100
tr=10ms
PEAK VALUE IPP
TA=25¡C
PULSE WIDTH (td) is
DEFINED as the POINT
WHERE the PEAK CURRENT
DECAYS to 50% of IPP
FIG. 2 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
100
175¡C
25¡C
10
1
0.1
0.01
0.35
0.45
10,000
0.55
0.65
0.75
0.85
0.95
FORWARD VOLTAGE, VOLTS
FIG. 4 - REVERSE POWER CAPABILITY
50
HALF
VALUE
-
IPP
2
10/1000ms
0
td
0
5
10 15 20 25 30 35 40
t, TIME, ms
FIG. 5 - LOAD DUMP POWER CHARACTERISTICS
6,000
(10ms EXPONENTIAL WAVEFORM)
5,000
4,000
3,000
1,000
10
100
PULSE WIDTH (ms) - 1/2 IPP EXPONENTIAL WAVEFORM
FIG. 6 - TYPICAL REVERSE CHARACTERISTICS
100
10
175¡C
1
0.1
2,000
1,000
0.01
25¡C
0.001
0
25
50
75 100 125 150 175
CASE TEMPERATURE, ¡C
0.0001
5
20
35
50
65
80
95
PERCENTAGE OF V(BR), %
100
FIG. 7 - TYPICAL TRANSIENT THERMAL IMPEDANCE
RQJA
10
1
RQJC
0.1
0.01
0.01
0.1
1
10
100
PULSE WIDTH, sec.