P6KE6.8A Series
NONREPETITIVE PULSE
WAVEFORM SHOWN IN
FIGURE 4
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ T = 25 C
A
_
100
PPK , PEAK POWER (kW)
10
100
80
60
40
20
0
0
25
50
75
100 125 150 175
200
1
0.1
0.1
µs
1
µs
10
µs
100
µs
1 ms
10 ms
t
P
, PULSE WIDTH
T
A
, AMBIENT TEMPERATURE (_C)
Figure 1. Pulse Rating Curve
Figure 2. Pulse Derating Curve
t
r
≤
10
µs
10,000
100
C, CAPACITANCE (pF)
MEASURED @
ZERO BIAS
1000
VALUE (%)
PEAK VALUE – I
PP
PULSE WIDTH (t
p
) IS
DEFINED AS THAT
POINT WHERE THE
PEAK CURRENT
DECAYS TO 50% OF I
PP
.
I
PP
2
HALF VALUE –
50
100
MEASURED @
V
RWM
0
t
P
10
0.1
1
10
100
V
BR
, BREAKDOWN VOLTAGE (VOLTS)
1000
0
1
2
3
t, TIME (ms)
4
Figure 3. Capacitance versus Breakdown Voltage
PD, STEADY STATE POWER DISSIPATION (WATTS)
Figure 4. Pulse Waveform
3/8″
5
4
3
2
1
0
0
25
50
75 100 125 150 175
T
L
, LEAD TEMPERATURE
_C)
200
3/8″
DERATING FACTOR
1
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.01
0.1
10
µs
0.2
0.5
1
2
5
10
D, DUTY CYCLE (%)
20
50 100
PULSE WIDTH
10 ms
1 ms
100
µs
Figure 5. Steady State Power Derating
Figure 6. Typical Derating Factor for Duty Cycle
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