P4SMA12CA データシートの表示（PDF） - Littelfuse, Inc
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P4SMA12CA Datasheet PDF : 4 Pages
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Silicon Avalanche Diodes
400W Surface Mount Transient Voltage Supressors
RoHS P4SMA Series
Ratings and Characteristic Curves TA=25˚C unless otherwise noted
100
10
P4SMA100A-
P4SMA170A
1
Non-repetitive pulse
waveform shown in
Fig.3 T = 25˚C
A
P4SMA6.8-
P4SMA91A
0.2x0.2"(5.0x5.0mm)
0.1 Copper Pad Areas
0.1µs 1.0µs 10µs 100µs 1.0ms
td- Pulse Width (sec.)
Fig. 1 Peak Pulse Power Rating
10ms
150
100
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
Half Value IPPM
2
50
10/1000µsec. Waveform
as defined by R.E.A
td
0
0
1.0
2.0
3.0
4.0
Fig. 3 Pulse Waveform
100
75
50
25
0.2x0.2"(5.0x5.0mm)
Copper Pad Areas
0
0 25 50 75 100 125 150 175 200
TA- Ambient Temperature (˚C)
Fig. 2 Pulse Derating Curve
20000
10000
1000
Uni-Directional
TJ=25˚C
f=1.0MHZ
Vsig=50mVp-p
VR, Measured at
Stand-Off
Voltage, VWM
100
Bi-Directional
10
1.0
Uni-Directional
Bi-Directional
10
100 200
VWM-Reverse Stand-Off Voltage (V)
Fig. 4- Typical Junction Capacitance
100
200
100
TJ=TJ max.
8.3 Single Half Sine-Wave
(JEDEC Method)
10
50
1.0
0.1
0.001
0.01
0.1 1 10 100
tp- Pulse Duration(sec)
1000
Fig. 5- Typ. Transient Thermal Impedance
10
1
5 10
100
Number of Cycles at 60Hz
Fig. 6- Maximum Non-Repetitive Peak
Forward Surge Current
Uni-Directional Only
260
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