View tcmmsz5221b-tcmmsz5260b datasheet:

BL Galaxy Electrical Production specification Surface mount zener diode MMSZ5221B-MMSZ5260B FEATURES Pb Planar die construction. Lead-free 500mW power dissipation. General purpose, medium current. Ideally suited for automated assembly processes. APPLICATIONS Zener diode. Ultra-small surface mount package. SOD-123 ORDERING INFORMATION Type No. Marking Package Code MMSZ5221B-MMSZ5359B See table 2 SOD-123 MAXIMUM RATING @ Ta=25℃ unless otherwise specified Characteristic Symbol Value Unit Forward Voltage @ IF=10mA VF 0.9 V Power Dissipation Pd 500 mW Thermal resistance,junction to ambient air RθjA 350 ℃/W Junction temperature Tj 150 ℃ Storage temperature range Tstg -65-150 ℃ Notes: 1. Device mounted on ceramic PCB; 7.6