The E180CC is a special quality double triode designed for use in computer circuits. The E180CC will maintain its emission characteristics after long periods where the valve is biased to cut-off. This characteristic equates to use in a bi-stable or flip-flop circuit. The E180CC is not designed for audio use.
The heater is centre tapped for use at 6.3 or 12.6 Volts but in a parallel connection.
The IBM part number.
The twin triodes with copper grid supports.
One anode seen full face.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 58 mm tall.
References: Data-sheet. Type E180CC was first introduced in 1954. See also1954 adverts.
