BAS19 / BAS20 / BAS21 Surface Mount Fast Switching Diode Voltage Range 100/150/200 Volts 250m 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 BAS19 Marking: A8 BAS20 Marking: A81 BAS21 Marking: A82 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 BAS19 BAS20 BAS21 Repetitive Peak Reverse Voltage VRRM 120 200 250 VRWM Working Peak Reverse Voltage 100 150 200 DC Blocking Voltage VR VR(RMS) 71 106 141 RMS Reverse Voltage IFM 400 Forward Continuous Current (Note 1) Io 200 Average Rectifier Output Current (Note 1) Non-Repetitive Peak Forward Surge Current @ t=1.0uS @ t=1.0S Repetitive Peak Forward Surge Current Power Dissipation (Note 1) Thermal Resistance Junction to Ambient Air (Note 1) Operating and Storage Temperature Range Electrical Characteristics Type Number Symbol IFSM Units V V V mA mA A IFRM Pd 2.5 0.5 625 250 mA mW RθJA 500 K/W TJ, TSTG -65 to + 150 Max 1.0 VF 1.25 100 IR 15 Cj 5.0 trr 50 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. Forward Voltage IF=100mA IF= 200mA Peak Reverse Current Tj=25℃ Tj=100℃ Junction Capacitance VR=0, f=1.0MHz Reverse Recovery Time (Note 2) - 828 - O C Min Units - V nA uA pF nS RATINGS AND CHARACTERISTIC CURVES (BAS19 THRU BAS21) 100 TJ = 25 C 100 IR, LEAKAGE CURRENT ( A) IF, INSTANTANEOUS FORWARD CURRENT (mA) FIG.1- FORWARD CHARACTERISTICS 1000 10 1 0.1 0.01 0 1 2 VF, INSTANTANEOUS FORWARD VOLTAGE (V) - 829 - FIG.2- LEAKAGE CURRENT VS JUNCTION TEMPERATURE 10 1 0.1 0.01 0 100 Tj, JUNCTION TEMPERATURE ( C) 200