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7D6

Sensibly equivalent to:
C70D CV1672 PP35 Pen3250 Pen36C
See also:
Brimar 15D1, 9D2, 11D3, 10D1, 4D1, 7D3, 7D6, 7D8, 7A3, R2 & 1D5 Advert
    
Extras ▼

 

The 7D6 is an audio output pentode. A family of three valves that differ only in heater requirements exists: 7A3 - 4.0 V @ 2.0 A, 7D8 13 V @ 0.65 A and this valve with a 40 Volt heater.
The anode load should be 8,500 Ω with 250 Volt HT.
The Brimar logo.
The lower mica, pinch and connections. The inner structure is more clearly seen in the 7D8.
The classic envelope is 44 mm in diameter, and excluding the B7 base pins is 100 mm tall.
References: Datasheet, & 1043. Type 7D6 was first introduced in 1935.

 

Pin Connections
B7
1
2
3
4
5
6
7
-
g1
g2
h
h
k
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
40
0.2
250
250
-6
32.0
6.0
60,00
10
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 13, 2018.
shape:classic construction:pinch type:pentode age:1930.1940 base:b7 heater:200ma pins:7 pin:1.- pin:2.g1 pin:3.g2 pin:4.h pin:5.h pin:6.k pin:7.a
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