5840=EF732 Raytheon NOS 1960's (4.7ma)
$ 10.99
5840=EF732 Raytheon NOS 1960's
4.7ma
Gm=3900
(5840=subminiature)
(The 5840 is the special quality version of the EF732 pentode. It appears
to be an updated version of the EF72. It is a high impedance device probably
used at as an IF amplifier with a tuned anode circuit at a frequency of 10.7 MHz.
The thin glass tube envelope is 9 mm in diameter, and excluding the B8D base pins is 36 mm tall)
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