... Plastic Material 'UL' Recognition Flammability Classification 94V-OMECHANICAL DATA Zener Diode Case: SOD-123, Molded Plastic Terminals: Plated Leads ... MMSA5253B,MMSZ5254B,MMSZ5255B,MMSZ5256B,MMSZ5257B,MMSZ5258B,MMSZ5259B***Some other Zener Diode we specialize in:Mini-MELF (Glass case) ... will have a brighter prospect!For more about Zener Diode or other discrete components,please feel free to ...