1N5344B - 1N5388B

      There are six features about 1N5344B - 1N5388B . The first one is that its voltage range is from 8.2V to 200V.And it is glass passivated Junction. It has 5W Steady State. And it is high surge capability. It is ±5% voltage tolerance on nominal and its Vz is Standard. In addition , it is 100% tested.                                                 
      Here are the mechanical datas of the 1N5344B - 1N5388B. Its case is molded plastic over glass passivated Junction. Its leads are solderable per MIL-STD-202, with Method 208. And its polarit is cathode band. Its approx weight is 1.2 grams.
Its maximum ratings are at Ta = 25°C unless otherwise specified. The DC Power Dissipation is @ TL = 75°C 9.5mm from Body (Board Mounted). Its symbol is Pd, and its value is 5.0, and its unit is W. The Power Derating is above 75°C lead temperature. The symbol of the 1N5344B - 1N5388B is null, and its value is 20, and its unit is °C/W.  The operating and storage temperature range is from -55 to +175. Its symbols are Tj , Tstg .Its unit is°C.
      There are four notes of the 1N5344B - 1N5388B:  The first one is that Nominal Zener Voltage (V ) is read with the device in standard test clips with 3/8- to 1/2-inch spacing between clip and case of the diode. Before reading, the diode is allowed to stabilize for a period of 40 ±10 milliseconds at 25°C +8, -2°C. Second, The Zener Impedance (ZZ or ZZK) is derived from the 60 Hz ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK,  respectively. Third, The Surge Current (IZSM) is specified as the maximum peak of a nonrecurrent sine wave of 8.3 milliseconds duration. The last one is that Voltage regulation (DVZ) is the difference between the voltage measured at 10% and 50% of IZM.