BAS521HIGH VOLTAGE SWITCHING DIODEFeaturesMechanical Data • Fast Switching Speed: max. 50ns • Case: SOD-523 • High Reverse Breakdown Voltage: 300V • Case Material: Molded Plastic, “Green” Molding Compound. • Low Leakage Current: 100nA at Room Temperature UL Flammability Classification Rating 94V-0 • Ultra-Small Plastic SMD Package • Moisture Sensitivity: Level 1 per J-STD-020 • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Terminal Connections: Cathode Bar • Halogen and Antimony Free. “Green” Device (Note 3) • Terminals: Finish—Matte Tin Annealed over Al oy 42 Leadframe. • Solderable per MIL-STD-202, Method 208 • Weight: 0.0014 grams (Approximate) SOD523 21 Top View Device Schematic Ordering Information (Note 4) Part NumberComplianceCasePackaging BAS521-7 Standard SOD523 3000/Tape & Reel (Note 5) BAS521-13 Standard SOD523 10,000/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 https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 4. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/. 5. Dispensed in every other cavity of the tape. Marking Information99 99 = Product Type Marking Code Bar Denotes Cathode Side