BAS21T SURFACE MOUNT FAST SWITCHING DIODE Features Mechanical Data Ultra-Small Surface Mount Package Case: SOT-523 Fast Switching Speed Case Material: Molded Plastic,Gree Molding Compound For General Purpose Switching Applications (Note 5). UL Flammability Classification Rating 94V-0 High Reverse Breakdown Voltage Moisture Sensitivity: Level 1 per J-STD-020D Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Terminals: Solderable per MIL-STD-202, Method 208 Halogen and Antimony Free. Green Device (Note 3) Lead Free Plating (Matte Tin Finish Annealed over Alloy 42 Leadframe) Polarity: See Diagram Weight: 0.002 grams (Approximate) SOT-523 TOP VIEW TOP VIEW Internal Schematic Ordering Information (Notes 4) Part Number Compliance Case Packaging BAS21T-7-F Commercial SOT-523 3000/Tape & Reel Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant 2. See BAS21T Maximum Ratings T = 25C unless otherwise specified A Characteristic Symbol Value Unit Repetitive Peak Reverse Voltage V 250 V RRM Working Peak Reverse Voltage V RWM 200 V DC Blocking Voltage VR RMS Reverse Voltage 141 V V R(RMS) Forward Continuous Current (Note 6) 400 mA I FM Average Rectified Output Current (Note 6) 200 mA I O Non-Repetitive Peak Forward Surge Current t = 1.0s 2.5 A I FSM t = 1.0s 0.5 Repetitive Peak Forward Surge Current I 625 mA FRM Thermal Characteristics Characteristic Symbol Value Unit Power Dissipation (Note 6) P 150 mW D Thermal Resistance Junction to Ambient (Note 6) R 833 C/W JA Operating and Storage Temperature Range -65 to +150 C T , T J STG Electrical Characteristics T = 25C unless otherwise specified A Characteristic Symbol Min Max Unit Test Condition Reverse Breakdown Voltage (Note 7) 250 V V I = 100A (BR)R R 1.0 I = 100mA F Forward Voltage V V F 1.25 I = 200mA F 100 nA T = 25C J Reverse Current Rated DC Blocking Voltage (Note 7) I R 15 A T = 100C J Total Capacitance C 5.0 pF V = 0, f = 1.0MHz T R I = I = 30mA, F R Reverse Recovery Time t 50 ns rr I = 0.1 I , R = 100 rr R L Notes: 6. Device mounted on FR-4 PCB with recommended pad layout, which can be found on our website at