100
10000
T
j
= 25
°
C
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT
75
C
T
, JUNCTION CAPACITANCE (pF)
Unidirectional
1000
50
Bidirectional
100
25
10 X 1000 Waveform
as defined by REA
0
0
25
50
75
100 125 150 175 200
T
A
, AMBIENT TEMPERATURE (
°
C)
Fig. 1 Pulse Derating Curve
100
10
1
10
100
1000
V
WM
, STANDOFF VOLTAGE (V)
Fig. 2 Typical Total Capacitance
I
P
, PEAK PULSE CURRENT (%I
pp
)
P
d
, PEAK PULSE POWER (kW)
T
j
= 25
°
C
Non Repetitive
Pulse Waveform
Shown in Fig. 4
100
Peak Value I
pp
10
Half Value I
pp
/2
50
1.0
t
p
0.1
0.1
1.0
10
100
1000
10000
0
10 X 1000 Waveform
as defined by R.E.A.
0
1
2
3
t, TIME (ms)
Fig. 4 Pulse Waveform
PM
(AV),
STEADY STATE POWER DISSIPATION (W)
60
1.0
PEAK FORWARD SURGE CURRENT, (A)
50
Pulse Width 8.3ms
Single Half-Sine-Wave
(JEDEC METHOD)
0.8
40
0.6
30
0.4
20
0.2
60Hz Resistive or
Inductive Load
10
0
1
2
5
10
20
50
100
NUMBER OF CYCLES AT 60Hz
Fig. 5 Maximum Non-Repetitive Surge Current
0.0
0
25
50
75
100
125
150
175
200
T
L
, LEAD TEMPERATURE (
°
C)
Fig. 6 Steady State Power Derating Curve
DS19005 Rev. 13 - 2
3 of 4
www.diodes.com
SMAJ5.0(C)A - SMAJ170(C)A
DIODES [ DIODES INCORPORATED ]
