Zener Diodes 5W Surmetic, 1N5364 to 1N5388 Series, ON SemiconductorA complete series of 5 Watt Zener diodes with tight limits and improved operating characteristics.This is a complete series of 5.0 Watt Zener Diode Voltage Regulators with tight limits and better operating characteristics that reflect the superior capabilities of silicon-oxide passivated junctions. All this is in an axial-lead, transfer-molded plastic package that offers protection in all common environmental conditions.Up to 180 Watt Surge Rating @ 8.3 msMaximum Limits Guaranteed on Seven Electrical ParametersCASE: Void-free, transfer-molded, thermo-setting plasticFINISH: All external surfaces are corrosion resistant and leads are readily solderablePOLARITY: Cathode indicated by color band. When operated in zener mode, cathode will be positive with respect to anode.MOUNTING POSITION: AnyWEIGHT: 0.7 gram (approx)Zener Diodes, ON Semiconductor