1N4727-1N4764

      1N4727-1N4764 (SILICON PLANAR POWER ZENER DIODES) were used in stabilizing and clipping circuits with high power rating. Standard zener voltage tolerance is ±10%. Add suffix "A" for ±5% tolerance and suffix "B" for ±2% tolerance. Other tolerances are available upon request. And it is made of glass case DO-41.
      Maximun parameters of 1N4727-1N4764 are getten at Ta=25°C. TJ(Junction temperature)=200°C, Ts(Storage Temperature range)= -65 to +200 , Ptot(Power Dissipation)=1W(Valid provided that leads at a distance of 8 mm from case are kept at ambient temperature), VF(Forward Voltage at IF = 200 mA)=1.2V, RthA(Thermal Resistance Junction to Ambient Air )=170 K/W(Valid provided that leads at a distance of 8 mm from case are kept at ambient temperature).
      Some parameters about Zener 1N4727-1N4764  Voltage Range(Measured under thermal equilibrium and DC test conditions and Tested with pulses tp = 20 ms), Maximum Zener Impedance(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), Maximum Reverse Leakage Current, Maximum Surge Current(The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current IZT), and Maximum Regulator Current of 1N4727-1N4764 (Valid provided that leads at a distance of 8 mm from case are kept at ambient temperature) were tested.