MMBD4148 Surface Mount Switching Diode Voltage Range 75 Volts 350m Watts Power Dissipation SOT-23 Features 0.020(0.51) 0.015(0.37) a Fast switching speed a Surface mount package ideally suited for automatic insertion a For general purpose switching applications a High conductance 0.055(1.40) 0.047(1.19) Mechanical Data 0.041(1.05) 0.047(0.89) 0.080(2.05) 0.070(1.78) 0.024(0.61) 0.018(0.45) a Case: SOT-23, Molded plastic a Terminals: Solderable per MIIL-STD-202, Method 208 a Polarity: See diagram a Marking: KA6, KA2, K5D aWeight: 0.008 gram (approx.) 0.098(2.50) 0.083(2.10) 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 25ambient 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 Average Rectifier Output Current Non-Repetitive Peak Forward Surge Current @ t=1.0uS @ t=1.0S Power Dissipation (Note 1) Thermal Resistance Junction to Ambient Air Operating and Storage Temperature Range Electrical Characteristics Type Number Units VRM VRRM VRWM VR VR(RMS) IFM Io 100 V 75 V 53 300 200 V mA mA IFSM 2.0 1.0 350 357 -65 to + 150 A Pd RJA TJ, TSTG Symbol Min mW C/W O C O Max Reverse Breakdown Voltage (Note 3) IR=100uA V(BR) 75 Forward Voltage IF=1.0mA 0.715 VF IF= 10mA 0.855 IF = 50mA 1.0 IF=150mA 1.25 Peak Reverse Current (Note 3) VR=75V 1.0 50 IR VR=75V, Tj=150 30 VR=25V, TJ=150 25 VR=20V Junction Capacitance (Note 3) VR=0, f=1.0MHz Cj 2.0 Reverse Recovery Time (Note 2) trr 4.0 Notes: 1. Device Mounted on Glass Epoxy PCB 1.6”x1.6”x0.06”, Mounting pad for the Cathode Lead Min. 0.93 inches. 2. Reverse Recovery Test Conditions: IF=IR=10mA, Irr=0.1 x IR, RL=100 3. Short Duration Test Pulse used to Minimize Self-Heating Effect. - 168 - Units V V uA nA pF nS RATINGS AND CHARACTERISTIC CURVES ( MMBD4148) FIG.1- POWER DERATING CURVE FIG.2- TYPICAL FWD CHARACTERISTICS 500 1000 400 IR, LEAKAGE CURRENT (nA) Pd, POWER DISSIPATION (mW) See Note 1 300 200 100 O TA = +150 C O TA = +125 C O TA = +75 C 10 O TA = +25 C 100 O TA = -25 C 0 0 100 200 O TA, AMBIENT TEMPERATURE, ( C) IF, INSTANTANEOUS FORWARD CURRENT ( W) FIG.3- TYPICAL REVERSE CHARACTERISTICS VR = 75V VR = 20V 0.1 0.01 0.001 0.0001 0 50 100 600 800 1000 1200 VF, INSTANTANEOUS FORWARD VOLTAGE (mV) 10 1 0.1 400 150 200 O Tj, JUNCTION TEMPERATURE ( C) - 169 -