Sensibly equivalent¶ to:
The 5556 or GL-556/PJ8 is an RF power triode with an anode dissipation of 7.5 Watts and full power rating to 6 MHz and reduced ratings up to the top of the HF band at 30 MHz.
The design use is as an RF power amplifier and oscillator and alternatively as a modulator.
The wide glass tube envelope is 37 mm in diameter and, excluding the UX4 base pins, is 90 mm tall.
References: Data-sheet & 4038.
Absolute Maximum Operating Conditions¶
Updated October 05, 2020. shape:wide.glass.tube construction:pinch type:triode age:1940.1950 base:ux4 pins:4 pin:1.f pin:2.a pin:3.g1 pin:4.f