DDZX5V1B - DDZX43 
 
 
SURFACE MOUNT PRECISION ZENER DIODE 
 
 
Features Mechanical Data 
 
 Very Sharp Breakdown Characteristics  Case: SOT23 
 300mW Power Dissipation on FR-4 PCB  Case Material: Molded Plastic, Green Molding Compound.    
UL Flammability Classification Rating 94V-0 
 Very Tight Tolerance on V 
Z
 Moisture Sensitivity: Level 1 per J-STD-020 
 Ideally Suited for Automated Assembly Processes 
 Terminals: Finish - Matte Tin Annealed over Alloy 42 Leadframe.  
 Very Low Leakage Current 
Solderable per MIL-STD-202, Method 208 
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  
 Polarity: See Diagram 
 Halogen and Antimony Free. Green Device (Note 3) 
 Weight: 0.008 grams (Approximate) 
 Qualified to AEC-Q101 Standards for High Reliability 
 An Automotive-Compliant Part is Available Under Separate 
Datasheet (DDZX5V1BQ) 
 
 
 
SOT23 
 
 
 
 
 
 
 
 
 Device Schematic 
Top View 
 
 
 
 
Ordering Information (Note 4) 
Part Number Compliance Case Packaging 
(Type Number)-7 (Note 5) Standard SOT23 3,000/Tape & Reel 
(Type Number)-13 (Note 6) Standard SOT23 10,000/Tape & Reel 
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 
 2. See  
 
DDZX5V1B - DDZX43 
 
 
 
 
 
Maximum Ratings (@T = +25C, unless otherwise specified.)  
A
Characteristic Symbol Value Unit 
0.9 V 
Forward Voltage                                                 @ IF = 10mA VF 
 
 
 
Thermal Characteristics    
Characteristic Symbol Value Unit 
Power Dissipation (Note 7) P 300 mW 
D
Thermal Resistance, Junction to Ambient Air (Note 7) 417 C/W 
R 
JA
Operating and Storage Temperature Range -65 to +150 
T T C 
J, STG
Note: 7. Device mounted on FR-4 PCB with recommended pad layout, which can be found on our website at