1N4448W Fast Switching Surface Mount Diode Voltage Range 75 Volts 350m Watts Power Dissipation SOD-123 Features 0.022(0.55) Typ. Min. Fast switching speed Surface mount package ideally suited for automatic insertion For general purpose switching applications High conductance 0.053(1.35) Max. 0.152(3.85) 0.140(3.55) Mechanical Data 0.112(2.85) 0.100(2.55) 0.010(0.25) Min. Case: SOD-123, Molded plastic Terminals: Solderable per MIIL-STD-202, Method 208 Polarity: Cathode Band Marking: Date Code and Type Code or Date Code only Type Code: T5 Weight: 0.01 gram (approx.) 0.067(1.70) 0.55(1.40) 0.006(0.15) Typ. Min. 0.004(0.10) Max. Dimensions in inches and (millimeters) Maximum Ratings and Electrical Characteristics Rating at 25℃ambient temperature unless otherwise specified. Maximum Ratings Type Number Symbol Value 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 Forward Voltage IF=5.0mA IF= 10mA IF =100mA IF=150mA Units VRM VRRM VRWM VR VR(RMS) IFM Io 100 V 75 V 53 500 250 V mA mA IFSM A Pd 4.0 2.0 350 mW RθJA 357 K/W TJ, TSTG -65 to + 150 Symbol C Min Max 0.62 0.72 0.855 1.0 1.25 2.5 50 30 25 VF Peak Reverse Current VR=75V VR=75V, Tj=150℃ _ IR VR=25V, TJ=150℃ VR=20V _ Junction Capacitance VR=0, f=1.0MHz Cj _ Reverse Recovery Time (Note 2) trr Notes: 1. Valid Provided that Terminals are Kept at Ambient Temperature. 2. Reverse Recovery Test Conditions: IF=IR=10mA, Irr=0.1 x IR, RL=100Ω. - 830 - O 4.0 4.0 Units V uA nA pF nS RATINGS AND CHARACTERISTIC CURVES (1N4448W) FIG.1- FORWARD CHAPACTERISTICS 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 1 0.01 0 1 2 VF, INSTANTANEOUS FORWARD VOLTAGE (V) FIG.3- ADMISSIBLE POWER DISSIPATION VS AMBIENT TEMPERATURE mW 500 400 300 Pd 200 100 50 0 0 100 200 OC Tamb - 831 - 0 100 Tj, JUNCTION TEMPERATURE ( C) 200