▼ Menu

6BA7

Sensibly equivalent to:
CV2527
    
Extras ▼

 

The 6BA7 is a heptode mixer known in the USA as a Pentagrid converter. The attached data-sheet dates from 1948 and gives initial characteristics.
Crossley were after market resellers and RCA made the valve.
The 12BA7 differs only in heater rating.
The Crossley name and the words Supplied by RCA.
Made in USA. The suppressor grid support.
The thin glass tube envelope is 21 mm in diameter, and excluding the B9A base pins is 59 mm tall.
Reference: Data-sheet. Type 6BA7 was first introduced in 1948.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g2,g4
g1
k
h
h
g5,s
g3
s
a

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
6.3
0.3
250
100
-1.0
3.8
10.0
1M
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 07, 2020.
shape:thin.glass.tube construction:all.glass type:heptode age:1940.1950 base:b9a heater:6.3v pins:9 pin:1.g2.g4 pin:2.g1 pin:3.k pin:4.h pin:5.h pin:6.g5.s pin:7.g3 pin:8.s pin:9.a
Return to Main Index