▼ Menu

EBC90

Sensibly equivalent to:
6AT6 CV452 DH77
See also:
The 'Magic Three' Valves - Automatic Volume control - The Neophyte Amplifier - A SE 2E26 Audio Amplifier
    
Extras ▼

 

The EBC90 is an amplifier triode with double diodes sharing the same cathode and was designed for use in superhet receivers. The HBC90 is the same valve but with a 12.6 V 0.15 A heater.
The design is instantly recognisable from the bright diode anode supports either side of the dark triode.
The thin sheet of the diode anodes is formed with a depressed centre to add rigidity. Under the top mica can be seen the copper grid support of the control grid together with the winding pitch.
The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
References: Data-sheet, 3002 & 1040. Type EBC90 was first introduced in 1953.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
k
h
h
a(d2)
a(d1)
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
250
-3
1.0
58,000
1.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 24, 2021.
Return to Main Index