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ME1401

Sensibly equivalent to:
CV495 CV2269
See also:
Mullard Valve Review Advert - Electrometer Valves Advert
    
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The ME1401 sub-miniature wire ended triode was designed to be soldered into the circuit as reliability was deemed to be of the same order as the rest of the components. The anode (pin 2) is marked with a red paint spot.
The ME family were all instrumentation amplifiers with very high imput impedances and classified as electrometer valves.
The thin glass tube envelope is 9 mm in diameter and, excluding the lead out wires is 41 mm tall.
References: Data-sheet & 4032 Type ME1401 was first introduced in 1950.

 

Pin Connections
B5J/F
1
2
3
4
5
f-
a
f+
-
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
1.25
0.013
25
PDF scanned from an original document held by the museum
Updated August 02, 2019.
shape:thin.glass.tube construction:all.glass type:triode age:1950.1960 base:b5j.f pins:4 pin:1.f- pin:2.a pin:3.f+ pin:4.- pin:5.g1
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