View z15smb5921b z15smb5942b-series datasheet:

1.5W Surface Mount Zener Diodes Z1.5SMB5921B – Z1.5SMB5942B 1.5W Surface Mount Zener Diodes Features  Low profile package  Built-in strain relief  Glass passivated junction  Low inductance SMB  Complete voltage range 6.8 to 51V (DO-214AA)  Typical IR less than 1.0µA above 12V  High temperature soldering guaranteed: 260° C/10 seconds at terminals  Low leakage current  RoHS compliant Mechanical Data Case: JEDEC SMB (DO-214AA), molded plastic over passivated junction Epoxy: Plastic package has UL flammability classification 94V-0 Terminals: Solder plated, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Weight: 0.003 ounce, 0.093 gram Maximum Ratings (T =25º C unless noted otherwise)