BZX84C43 - BZX84C51 350mW SURFACE MOUNT ZENER DIODE Features Mechanical Data Planar Die Construction Case: SOT-23 350mW Power Dissipation Case Material: Molded Plastic. UL Flammability Classification Rating 94V-0 Zener Voltages from 43V - 51V Moisture Sensitivity: Level 1 per J-STD-020D Ideally Suited for Automated Assembly Processes Terminals: Solderable per MIL-STD-202, Method 208 Lead, Halogen and Antimony Free, RoHS Compliant Gree Device (Notes 3 and 6) Lead Free Plating (Matte Tin Finish annealed over Alloy 42 leadframe). Polarity: See Diagram Marking Information: See Page 2 Ordering Information: See Page 2 Weight: 0.008 grams (approximate) Top View Device Schematic Maximum Ratings T = 25C unless otherwise specified A Characteristic Symbol Value Unit Forward Voltage I = 10mA V 0.9 V F F Thermal Characteristics Characteristic Symbol Value Unit Power Dissipation (Note 1) P 300 mW D Power Dissipation (Note 2) P 350 mW D Thermal Resistance, Junction to Ambient Air (Note 1) 417 C/W R JA Thermal Resistance, Junction to Ambient Air (Note 2) 357 R C/W JA Operating and Storage Temperature Range T T -65 to +150 C J, STG Electrical Characteristics T = 25C unless otherwise specified A Typical Temperature Zener Voltage Maximum Reverse Maximum Zener Impedance Coefficient Range Current (Note 4) Type Type (Note 5) (Note 5) I ZT Number Code mV/C V I I Z I Z I I V Z ZT ZT ZT ZT ZK ZK R R Min Max Nom (V) Min (V) Max (V) (mA) () () (mA) (A) (V) BZX84C43 Y15/KYF 43 40.0 46.0 2.0 150 375 0.5 0.1 30.1 10.0 12.0 BZX84C47 Y16/KYG 47 44.0 50.0 2.0 170 375 0.5 0.1 32.9 10.0 12.0 BZX84C51 Y17/KYH 51 48.0 54.0 2.0 180 400 0.5 0.1 35.7 10.0 12.0 Notes: 1. Device mounted on FR-4 PC board with recommended pad layout, which can be found on our website at BZX84C43 - BZX84C51 500 10 C47 T = 25C J C43 C51 8 400 6 300 Note 1 Note 2 200 4 Test Current I Z 2mA 2 100 0 0 0 0 100 200 10 20 30 40 50 60 70 V , ZENER VOLTAGE (V) T , AMBIENT TEMPERATURE (C) Z A Fig. 2 Typical Zener Breakdown Characteristics Fig. 1 Power Derating Curve 100 10 1 100 10 V , NOMINAL ZENER VOLTAGE (V) Z Fig. 3 Typical Total Capacitance vs. Nominal Zener Voltage Ordering Information (Note 7) Part Number Case Packaging (Type Number)-7-F* SOT-23 3000/Tape & Reel *Add -7 to the appropriate type number in Electrical Characteristics Table on Page 2. Example: 43V Zener = BZX84C43-7-F. Notes: 7. For packaging details, go to our website at