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P4SMA250A Datasheet(PDF) 3 Page - Littelfuse |
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P4SMA250A Datasheet(HTML) 3 Page - Littelfuse |
3 / 4 page Silicon Avalanche Diodes 260 www .littelfuse .com Fig. 1 Peak Pulse Power Rating Fig. 3 Pulse Waveform Fig. 5- Typ. Transient Thermal Impedance Fig. 6- Maximum Non-Repetitive Peak Fig. 4- Typical Junction Capacitance Fig. 2 Pulse Derating Curve td- Pulse Width (sec.) TA- Ambient Temperature (˚C) 0.1µs 1.0µs 10µs 100µs 1.0ms 10ms 0.1 1 10 100 0.2x0.2"(5.0x5.0mm) Copper Pad Areas 0 0 0 0.1 1.0 10 100 50 100 150 1.0 2.0 3.0 4.0 0.001 0.01 0.1 1 10 100 1000 1 10 100 50 200 20000 10000 1000 100 10 1.0 10 100 200 10 5 100 0 25 25 50 50 75 75 100 100 125 150 175 200 tp- Pulse Duration(sec) Number of Cycles at 60Hz VWM-Reverse Stand-Off Voltage (V) Forward Surge Current Uni-Directional Only tr=10µsec Peak Value IPPM P4SMA6.8- P4SMA91A P4SMA100A- P4SMA170A Half Value 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 TJ=TJ max. 8.3 Single Half Sine-Wave (JEDEC Method) Uni-Directional Bi-Directional TJ=25˚C f=1.0MHZ Vsig=50mVp-p VR, Measured at Stand-Off Voltage, VWM Non-repetitive pulse waveform shown in Fig.3 T A = 25˚C Uni-Directional Bi-Directional 0.2x0.2"(5.0x5.0mm) Copper Pad Areas 400W Surface Mount Transient Voltage Supressors P4SMA Series RoHS Ratings and Characteristic Curves TA=25˚C unless otherwise noted |
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