High Power Double Triode, having separate cathodes, primarily intended for use as a resistance-coupled amplifier or phase inverter.

The 12AY7 is a miniature medium-mu twin triode designed primarily for use in low-level stages of high-gain audio-frequency amplifiers. The tube is specially designed to exhibit low noise and low microphonic output.

The 12X4 is a miniature, full-wave, cathode type rectifier.

   The 50L6GT is designed for service in the output stage of AC/DC receivers. It delivers a high power output with high power sensitivity from low supply voltages.

The 5AR4 is a heater-cathode twin diode designed for full-wave rectifier operation. High output current and small size make this tube especially suitable for compact amplifier designs

The Sylvania Type 5AV8 is a medium mu triode and sharp cutoff pentode contained in a 9-pin, miniature envelope. It is intended for service in television receivers employong a series heater arrangement.

The 5U4-GB is a filamentary twin diode designed for use as a full-wave rectifier in the power supply of television receivers or other equipment wich have high direct-current requirements. The 5U4-GB employs a straight-sided T-12 envelope and may be used as a replacement for either the 5U4-G or 5U4-GA.