Transient Voltage Suppression Diodes
Surface Mount – 1500W > SMCJ series
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
A
100
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
P
PPM
-Peak Pulse Power (kW)
100
80
60
10
40
0.31x0.31" (8.0x8.0mm)
Copper Pad Area
20
1
0.000001
0
0.00001
0.0001
0.001
0
25
50
75
100
125
150
175
t
d
-Pulse Width (sec.)
T
A
-Ambient temperature (ºC)
Figure 3 - Pulse Waveform
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10μsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to
50%
of IPPM
Figure 4 - Typical Junction Capacitance
100000
Bi-directional V=0V
10000
Uni-directional V=0V
100
Half Value
IPPM
IPPM
2
( )
10/1000μsec. Waveform
as defined by R.E.A
Cj (pF)
1000
Uni-directional @V
R
100
Bi-directional @V
R
50
10
td
Tj=25C
f=1.0MHz
Vsig=50mVp-p
0
0
1.0
2.0
t-Time (ms)
3.0
4.0
1
1.0
10.0
100.0
1000.0
V
BR
- Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Dissipation Derating
Curve
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
25
50
75
100
125
150
T
A
- Ambient Temperature (ºC)
175
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
I
FSM
- Peak Forward Surge Current (A)
200
180
160
140
120
100
80
60
40
20
0
1
10
Number of Cycles at 60 Hz
100
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/SMCJ.html for current information.
Revision: November 13, 2009
P
M(AV)
, Steady Sate Power Dissipation
(W)
SMCJ Series
SMCJ Series
Figure 1 - Peak Pulse Power Rating
Figure 2 - Pulse Derating Curve
LITTELFUSE [ LITTELFUSE ]
