Transient Voltage Suppression Diodes
Axial Leaded – 20000W
Ratings and Characteristic Curves
(T =25°C unless otherwise noted
Figure 1 - Peak Pulse Power Rating Curve
A
Figure 1 - Peak Pulse Power Rating Curve
1000
Figure 2 - Pulse Derating Curve
100
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
P
PPM
- Peak Pulse Power (KW)
100
80
60
10
40
1
20
0.1
0.000001
0
0
25
50
75
100
125
150
175
200
T
A
-Ambient temperature (ºC)
0.00001
0.0001
0.001
t
d
- Pulse Width (Sec.)
Figure 3 - Pulse Waveform
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10μsec
Peak Value
IPPM
Figure 4 - Typical Junction Capacitance
Cj, Junction Capacitance (pf)
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to
50%
of IPPM
Bi-directional V= OV
10000
Uni-directional V= OV
100
Uni-directional @ VR
Half Value
IPPM
IPPM
2
( )
10/1000μsec. Waveform
as defined by R.E.A
100
Bi-directional @ VR
50
Tj=25C
f=1.0MHz
Vsig=50mVp-p
0
td
1
1.0
2.0
t-Time (ms)
3.0
4.0
0
50
100
150
200
250
300
350
V
BR
- Reverse Breakdwon Voltage (V)
0
Figure 5 - Steady State Power Derating Curve
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current
450
I
FSM
, Peak Forward Surge Current (A)
9
Steady State Power Dissipation (W)
8
7
6
5
4
3
2
1
0
0
25
50
75
100 125 150 175 200
T
L
- Lead Temperature (ºC)
L = 0.375” (9.5mm)
Lead Lengths
400
350
300
250
200
150
100
50
0
1
10
Number of Cycles at 60 Hz
100
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©2007 Littelfuse
96
20KPA Series
Specifications are subject to change without notice.
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