Sensibly equivalent¶ to:
The M8097 is a special quality version of the commercial EAC91 and is a miniature diode triode. The diode is a separate valve to the triode and can be operated in a separate circuit.
Mullard describe the EAC91 as intended for service as an oscillator triode for use as a frequency changer (mixer). The sample circuit given by Mullard uses the diode as the non linear mixer element and rates the design as suitable for UHF use up to 300 MHz. The special quality versions were designed for long life and vibration resistance.
The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins it is 46 mm long.
References: Datasheet & 1040. Type M8097 was first introduced in 1963.
Absolute Maximum Operating Conditions¶
Updated March 29, 2013. shape:thin.glass.tube construction:all.glass type:diode.triode age:1960.1975 base:b7g heater:6.3v pins:7 pin:1.a(d) pin:2.k(d) pin:3.h pin:4.h pin:5.k pin:6.g1 pin:7.a