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The anode cap is used for electrical connection for vacuum electron tube which has anode high voltage connection from its top. Its contact resistance is less than 0.01 ohm, insulation resisitance is over 10,000 Mohm. Life time is about 200 cycles.

Technical specification

                                           

                                     

                               

                                            

Ceramic Material Physical Index:
      Volume density: ＞2.7 g/cm3                                      Intensity of resisting fold: 1400 Kgf/cm2
      Swell modulus: ＜8×10-6mm/℃                           Intervene current normal number: ＜7.5
      Secant of depletion: ＜8×10-4                                   Resistivity: ＞1012Ω.cm
      Intensity of breakdown: 20 KV.mm
 
Chemistry Composition(weight percent):
      SiO2: 57.5～58.5                Al2O3:3.7～4.7                          Fe2O3: ＜0.15           R2O: ＜0.3
      BaO: 7.5～8.5                   MgO: 27.5～29.5                       Scorching hot impurity: ＜0.8         
 
Metal Lug Chemical Element (%)
      Cu: remainder            P: 0.1~0.25                Fe: ≤0.05                Zn:  /              Sn:  6～7