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SMCJ 数据表(PDF) 5 Page - STMicroelectronics |
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SMCJ 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 10 page ![]() SMCJ Characteristics Doc ID 5617 Rev 8 5/10 Figure 6. Junction capacitance versus reverse applied voltage for unidirectional types (typical values) Figure 7. Junction capacitance versus reverse applied voltage for bidirectional types (typical values) 0.01 0.10 1.00 10.00 1 10 100 1000 C(nF) F=1 MHz V OSC=30 mVRMS T j=25 °C SMCJ5.0A SMCJ12A SMCJ24A SMCJ40A SMCJ85A SMCJ188A VR(V) 0.01 0.10 1.00 10.00 1 10 100 1000 C(nF) F=1 MHz V OSC=30 mVRMS T j=25 °C SMCJ5.0CA SMCJ12CA SMCJ24CA SMCJ40CA SMCJ85CA SMCJ188CA VR(V) Figure 8. Peak forward voltage drop versus peak forward current (typical values) Figure 9. Relative variation of thermal impedance, junction to ambient, versus pulse duration Figure 10. Thermal resistance junction to ambient versus copper surface under each lead Figure 11. Leakage current versus junction temperature (typical values) I FM(A) 1.0E-01 1.0E+00 1.0E+01 1.0E+02 0.0 0.5 1.0 1.5 2.0 2.5 3.0 T j =25 °C T j =125 °C VFM(V) 0.01 0.10 1.00 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 Z th(j-a) /Rth(j-a) tP(s) Recommended pad layout PCB FR4, copper thickness = 35 µm 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 R th(j-a) (°C/W) SCU(cm²) PCB FR4, copper thickness = 35 µm IR (nA) 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 25 50 75 100 125 150 V R=VRM V RM ≥ 10 V V R=VRM V RM <10 V Tj(°C) |
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