MMBD4448H Surface Mount Switching Diode Voltage Range 80 Volts 350m Watts Power Dissipation SOT-23 Features 0.020(0.51) 0.015(0.37) Fast switching speed Surface mount package ideally suited for automatic insertion For general purpose switching applications High conductance 0.055(1.40) 0.047(1.19) Mechanical Data 0.080(2.05) 0.070(1.78) 0.024(0.61) 0.018(0.45) Case: SOT-23, Molded plastic Terminals: Solderable per MIIL-STD-202, Method 208 Polarity: See diagram Marking: KA3 Weight: 0.008 gram (approx.) 0.098(2.50) 0.083(2.10) 0.041(1.05) 0.047(0.89) 0.120(3.05) 0.104(2.65) 0.043(1.10) 0.035(0.89) 0.006(0.15) 0.001(0.013) 0.024(0.61) 0.018(0.45) 0.007(0.178) 0.003(0.076) Dimensions in inches and (millimeters) Maximum Ratings and Electrical Characteristics Rating at 25℃ambient temperature unless otherwise specified. Maximum Ratings Type Number Symbol MMBD4448H Non-Repetitive Peak Reverse Voltage Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Forward Continuous Current (Note 1) Average Rectifier Output Current (Note 1) Non-Repetitive Peak Forward Surge Current @ t=1.0uS @ t=1.0S Power Dissipation (Note 1) Thermal Resistance Junction to Ambient Air (Note 1) Operating and Storage Temperature Range Electrical Characteristics Type Number VRM VRRM VRWM VR VR(RMS) IFM Io Units 100 V 80 V 57 500 250 V mA mA 4.0 2.0 350 A mW RθJA 357 K/W TJ, TSTG -65 to + 150 IFSM Pd Symbol Reverse Breakdown Voltage (Note 2) IR=2.5uA V(BR) Forward Voltage IF=5.0mA IF= 10mA VF IF =100mA IF=150mA Peak Reverse Current (Note 2) VR=75V VR=75V, Tj=150℃ IR VR=25V, TJ=150℃ VR=20V Junction Capacitance VR=0.6V, f=1.0MHz Cj Reverse Recovery Time VR=6V, IF=5mA trr Notes: 1. Valid Provided that Terminals are Kept at Ambient Temperature. 2. tp < 300uS, Duty Cycle < 2%. - 844 - O C Min Max Units 80 0.62 _ V _ _ _ 0.72 0.855 1.0 1.25 V 100 50 30 25 uA 3.5 4.0 pF nS nA RATINGS AND CHARACTERISTIC CURVES (MMBD4448H) FIG.1- FORWARD CHARACTERISTICS 10000 100 IR, LEAKAGE CURRENT (nA) IF, INSTANTANEOUS FORWARD CURRENT (mA) 1000 10 1 0.1 FIG.2- LEAKAGE CURRENT VS JUNCTION TEMPERATURE 1000 100 10 VR =20V 0.01 0 1 2 VF, INSTANTANEOUS FORWARD VOLTAGE (V) - 845 - 1 0 100 Tj, JUNCTION TEMPERATURE ( C) 200