Sensibly equivalent¶ to:
The EBF80 is a variable μ amplifier pentode and a pair of signal diodes in the one envelope. Probably this was designed as the later EBF89 as final IF amplifier and AM detector. The other diode would provide AGC rectification.
This EBF80 wears the Mullard badge but was made in Holland, so it is a Philips produced device. Note the indent at the base of the glass foot, this is not typical of UK Mullard practice whereas EBF80 is.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 59 mm tall.
References: Datasheet, 3002 & 1040. Type EBF80 was first introduced in 1950.
Absolute Maximum Operating Conditions¶
Updated February 04, 2013.