▼ Menu

12BH7

Sensibly equivalent to:
CV5042
    
Extras ▼

 

The 12BH7 double triode is pin compatible with the ECC81,2,3 series from Mullard but has slightly different characteristics. Brimar give an intended use as a TV frame valve for wide deflection angle tubes, but the construction is compatible with audio through to low VHF use.
The Brimar 12BH7 was listed in the Brimar manual of 1953 but not earlier.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins the length is 57 mm.
References: Datasheet & 1040. Type 12BH7 was first introduced in 1950.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(2)
g1(2)
k(2)
h
h
a(1)
g1(1)
k(1)
hct

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.6
250
-10.5
11.5
5500
3.1
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 21, 2013.
Return to Main Index