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SAC45 数据表(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
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SAC45 数据表(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
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4 / 4 page ![]() - 641 - RATINGS AND CHARACTERISTIC CURVES (SAC SERIES) FIG.2- PULSE DERATING CURVE 0 50 100 150 175 0 25 50 75 100 T LEAD TEMPERATURE( C) L , O FIG.3- PULSE WAVEFORM 0 0 1.0 2.0 3.0 4.0 100 150 50 t TIME (ms) T =25 C Pulse Width (td) is defined sa the point where the peak current decays to 50% of l j 0 PPM td tr=10 sec. m 10/1000 sec. Waveform as defined by R.E.A. m Peak Value lPPM HALF VALUE - IPP lPPM 2 FIG.1- PEAK PULSE POWER RATING CURVE 0.1 s 100 s 1.0ms 10ms 10 s 1.0 s 0.1 30 10 1 tp, PULSE WIDTH, (sec.) Non-repetitive Pulse Waveform shown in Fig.3 T =25 C A 0 Impulse Exponential Decay Half Sine Square Current Waveform td td PPK PPK PPK".5 tld td=7tp Average Power Peak Power (single pulse) |
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