▼ Menu

1299

Sensibly equivalent to:
1299A 3D6 CV815 DL29
    
Extras ▼

 

The 1299 / 3D6 is an American battery amplifier pentode. The all glass designs did not emerge until 1938, the first reference in the Brimar manual is 1950 as the UK did not make Loctal valves until after 1945. We believe that the 3D6 was used in Canadian WS58 wireless sets for portable military communications.
The wide glass tube envelope is 28 mm in diameter and, excluding the B8B (Loctal) base pins, is 54 mm tall.
References: Datasheet & 1040. Type 1299 was first introduced in 1942.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
f
a
g2
-
-
g1
fct
f-

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
1.4
0.22
135
90
-6
5.7
0.7
2.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated September 07, 2013.
Return to Main Index