a circumambient metal housing 26 of 0 2 to 0 3 of an inch in diameter is hermetically sealed to header member 10 at the solder circular fillet 28 the metal header 26 serves as the ground connection for the device fig3 shows an alternate embodiment of the converging wave detonator design described in fig2 in this design a multiple lead metal header 30 has a number of header insulator holes 32 therein tubular insulators 34 having header leads 36 therein are sealed into header 30 to make a leak tight header assembly an electrical igniter integrated circuit chip 38 is centrally positioned on the interior surface of the header 30 so that an igniter hot spot 40 is axially positioned on the header 30 header leads 36 are electrically connected to the igniter integrated circuit chip by means of electrical conductors 42 the electronic igniter integrated circuit chip includes r f bypass means an electronic logic system and switching means to enable generation of a hot spot 40 only upon application of an intended input signal to leads 36 a disc shaped insulator element 44 having an axial hole 46 therein is axially aligned with the igniter header assembly and positioned thereon a lead styphnate cylindrical igniter charge.