3CX10000A3/8159 Transmission Tube The 3CX10000A3/8159 is a(n) fac triode manufactured by CPI-Eimac. The 3CX10000A3/8159 is primarily used in broadcast applications. CPI-Eimac is a leading manufacturer of power grid tubes covering a wide range of applications including broadcast, industrial and scientific. Richardson Electronics is proud to be the exclusive global distibutor for CPI-Eimac products. Contact Richardson Electronics today for more . . .