1N4728A - 1N4761A

      1N4728A-G~1N4764A-G(1.0W ZENER DIODE) are 1.0 Watt Power Dissipation, 3.3V-75V Nominal Zener Voltage and its standard VZ tolerance is 5%. It is also leading free finish, RoHS Compliant (EC Directive 2002/95/EC (RoHS) revision 13.2.2003.  Glass and High Temperature Solder Exemptions Applied where applicable, see EU Directive Annex Note 5 and 7).
      Some property of 1N4728A-G~1N4764A-G were known, Terminals(Finish-Sn96.5Ag3.5. Solderable per MIL-STD-202, Method 208), Polarity(CCathode Band), Case (DO-41), Case Material(Glass. UL Flammability Classification Rating 94V-0), Mounting position(Any), Weight(approximate 0.35 gram), Marking(Type Number).
      Maximun results of 1N4728A-G~1N4764A-G are getten at TA=25°C unless otherwise specified. IZ(Zener Current)=Pd / VZ mA, TJ(Junction temperature)=150°C and Tstg(Storage Temperature range)= -65 to +175 , RthJA(Thermal resistance juntion to ambient air)=175°C/ W, VF(Forward Voltage at IF = 200 mA)=1.2V, Pd(Power Dissipation/Derate Above 50°C(Valid provided that leads are kept at TL @ 50°C with lead length = 9.5mm (3/8") from case))=1.0W/6.67mW/°C. All the Measures are under thermal equilibrium and dc (IZT) test conditions. The Zener impedance is derived from the 60 Hz ac voltage which results when an ac current having an rms value equal to 10% of the Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units.