- 您现在的位置：买卖IC网 > Sheet目录135 > MBRM140T1G (ON Semiconductor)DIODE SCHOTTKY 40V 1A POWERMITE
       MBRM140T1G, NRVBM140T1G, MBRM140T3G, NRVBM140T3G http://onsemi.com 3 I R , MAXIMUM REVERSE CURRENT (AMPS) I R , REVERSE CURRENT (AMPS) Figure 3. Typical Reverse Current Figure 4. Maximum Reverse Current 40 0 VR, REVERSE VOLTAGE (VOLTS) 10E?3 1.0E?3 100E?6 10E?6 1.0E?6 VR, REVERSE VOLTAGE (VOLTS) 10 20 30 40 0 100E?6 10E?6 10 20 30 TJ = 85 ?C TJ = 25 ?C TJ = 85 ?C TJ = 25 ?C 100E?3 10E?3 1.0E?3 P FO , AVERAGE POWER DISSIPATION (WATTS) I O , AVERAGE FORWARD CURRENT (AMPS) = 10 Ipk/Io = 5 Figure 5. Current Derating Figure 6. Forward Power Dissipation TL, LEAD TEMPERATURE (?C) IO, AVERAGE FORWARD CURRENT (AMPS) 0.2 0 0 1.0 0.6 0.5 0.3 0.1 0.4 0.8 1.2 1.60.6 1.41.0 0.4 = SQUARE WAVE dc Ipk/Io Ipk/Io Ipk/Io = 20 0.2 0.7 0.8 0.9 35 65 85 9545 7555 115105 125 25 1.8 1.2 1.0 0.8 0.2 0 1.4 1.6 Ipk/Io = 20 Ipk/Io = 10 Ipk/Io = 5 Ipk/Io = SQUARE WAVE dc 0.6 0.4 FREQ = 20 kHz T J , DERATED OPERATING TEMPERATURE ( C) C, CAPACITANCE (pF) R, REVERSE VOLTAGE (VOLTS) VR, DC REVERSE VOLTAGE (VOLTS) Figure 7. Capacitance Figure 8. Typical Operating Temperature Derating* 5.0 10 20 25 20 2530 35 30 3540 5.0 10 0 V 1000 100 10 15 40 75 0 115 95 85 15 105 125 * Reverse power dissipation and the possibility of thermal runaway must be considered when operating this device under any re- verse voltage conditions. Calculations of TJ therefore must include forward and reverse power effects. The allowable operating TJ may be calculated from the equation: T J = T Jmax ? r(t)(Pf + Pr) where r(t) = thermal impedance under given conditions, Pf = forward power dissipation, and Pr = reverse power dissipation This graph displays the derated allowable TJ due to reverse bias under DC conditions only and is calculated as T J = T Jmax ? r(t)Pr, where r(t) = Rthja. For other power applications further calculations must be performed. Rtja = 33.72 ?C/W 51?C/W 83.53?C/W 96?C/W TJ = 25 ?C 69?C/W |