1N4728G-1N4764G

      1N4728G-1N4764G is a kind of 1W silicon planer zener diodes(VZ: 3.3 to 100V PD: 1.0 Watt).
      The mechanical properties of 1N4727-1N4764  we can give are case(DO-41 glass case) and weight(Approx. 0.35 g).At the temperature of at 25 °C ambient temperature (unless otherwise specified), VF(Maximum Forward Voltage at IF = 200 mA)=1.2V, PD(Power dissipation)=1.0W (Valid provided that leads at a distance of 3/8" from case are kept at ambient temperature), TJ(Storage Temperature range)=100K / W(Valid provided that leads at a distance of 3/8" from case are kept at ambient temperature), TS(Storage Temperature range)=-55 to +175, RJA(Thermal resistance junction to ambient)=100K / W(Valid provided that a distance of 8mm from case are kept at ambient temperature).
      There are some notes for test 1N4728G-1N4764G, which are vaild provided that electrodes at a distance of 10mm from case are kept at ambient temperature, measured under thermal equilibrium and DC test conditions, and the zener impedance is derived from the 1kHz AC voltage which results when on 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.