Vacuum Tube - 5751, Triode, Dual, HI-MU
New-Old-Stock (NOS) tube.
The 5751 is a miniature high-mu twin triode each section of which as an individual cathode connection. The tube is especially suited for use in resistance-coupled voltage amplifiers, phase inverters, multivibrators, and numerous industrial-control circuits where high voltage gain is desired.
The 5751 is a special-quality tube intended for use in critical industrial and military applications in which operational dependability is of primary importance. Features of the tube include a high degree of mechanical strength and a heater-cathode construction capable of withstanding many thousand cycles of intermittent operation. When used in on-off control applications, the tube will maintain its emission capabilities after long periods of operation under cutoff conditions.