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SG215

Sensibly equivalent to:
CV3702
See also:
Mazda SG215 Advert - Mazda 2 Volt Range Advert - Valves for Your Set
    
Extras ▼

 

The SG215 tetrode was introduced in 1930 with a screw top cap. The 'top hat' top cap appeared in the mid 1930s. It is a screen grid or tetrode valve for RF amplification in receivers.
The formation of AEI saw the Mazda valve brand being transferred from BTH to Ediswan.
The screen grid can be seen through the hole in the silvering left when the getter was fired.
The balloon envelope is 43 mm in diameter and, excluding the B4 base pins, is 114 mm tall.
References: 1043. Type SG215 was first introduced in 1930.

 

Pin Connections
B4
1
2
3
4
tc
g2
g1
f
f
a

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
2.0
0.15
150
60
-1.5
1.5
0.25
0.44M
1.1
Updated May 26, 2018.
shape:balloon construction:pinch type:tetrode age:1930.1940 base:b4 heater:2.0v pins:4 pin:1.g2 pin:2.g1 pin:3.f pin:4.f pin:tc.a
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