- 您现在的位置：买卖IC网 > Sheet目录135 > MBRM120LT1G (ON Semiconductor)DIODE SCHOTTKY 20V 1A POWERMITE
        MBRM120LT1G, NRVBM120LT1G, MBRM120LT3G, NRVBM120LT3G 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 20 ?6 0 VR, REVERSE VOLTAGE (VOLTS) 10E?3 1.0E?3 100E?6 10E?6 1.0E VR, REVERSE VOLTAGE (VOLTS) 5.0 10 15 20 0 100E?6 10E?6 5.0 10 15 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) Ipk/Io = 5 Figure 5. Current Derating Figure 6. Forward Power Dissipation 35 65 85 9545 7555 115105 125 25 TL, LEAD TEMPERATURE (?C) 1.8 1.2 1.0 0.8 0.2 0 IO, AVERAGE FORWARD CURRENT (AMPS) 0.2 0 0.7 0.6 0.5 0.3 0.1 0 0.6 1.40.8 1.2 1.61.0 1.4 0.4 0.4 1.6 SQUARE WAVE dc Ipk/Io = Ipk/Io = 10 Ipk/Io = 20 Ipk/Io = 20 Ipk/Io = 10 Ipk/Io = 5 Ipk/Io = SQUARE WAVE dc 0.6 0.4 FREQ = 20 kHz 0.2 T J , DERATED OPERATING TEMPERATURE ( ? C) C, CAPACITANCE (pF) Figure 7. Capacitance Figure 8. Typical Operating Temperature Derating* 12 0 VR, REVERSE VOLTAGE (VOLTS) 1000 100 10 VR, DC REVERSE VOLTAGE (VOLTS) 10 2012 14 16 18 65 0 95 75 2.0 4.0 8.0 106.0 2.0 4.0 8.06.0 85 115 125 * 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 119?C/W C/W 277.35 ?C/W 338 ?C/W TJ = 25 ?C 20 14 16 18 105 204? |