Littelfuse 20KPA Series - Manual (Page 4)

Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Axial Leaded – 20000W > 20KPA series
I PPM
- P
eak P
ulse Cur
rent, %
I RSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10µsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000µsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM
( )
0
20
40
60
80
100
0 25 50 75 100 125 150 175
T
A
-Ambient temperature (ºC)
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage
%
1
100
10000
0 50 100 150 200 250 300 350
V
BR
- Reverse Breakdwon Voltage (V)
Cj, Junction Capacitance (pf
)
Tj=25C
f=1.0MHz
Vsig=50mVp-p
Bi-directional @ VR
Uni-directional V= OV
Bi-directional V= OV
Uni-directional @ VR
0
1
2
3
4
5
6
7
8
9
0 25 50 75 100 125 150 175 200
L = 0.375” (9.5mm)
Lead Lengths
Steady State Power Dissipation (W
)
T
L
- Lead Temperature (ºC)
Figure 3 - Pulse Derating Curve Figure 4 - Pulse Waveform
Figure 5 - Typical Junction Capacitance Figure 6 - Steady State Power Derating Curve
0
50
100
150
200
250
300
350
400
450
1 10 100
Number of Cycles at 60 Hz
I FSM
, Pe
ak
Forw
ar
d
Su
rg
e
Cu
rre
nt
(A
)
Figure 7 - Maximum Non-Repetitive Peak Forward
Surge Current
Ratings and Characteristic Curves
(T
A
=25°C unless otherwise noted) (Continued)