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D210SW

 
See also:
Hivac SW Advert, May 1937
    
Extras ▼

 

The Hivac D210SW is a battery triode with a ceramic base and a rich Gold metalisation. It dates from 1936 when Hivac introduced their SW or Short Wave versions of earlier valves. The ceramic base was made from 'Frequentite'.
With a 2 Volt filament was designed to be heated from an accumulator supply.
This exhibit shows a different style of lettering to our other D210SW.
The plain reverse. Note the wire fixed to the glass that provides the connection to the metal screening paint.
The classic envelope is 39 mm in diameter, and excluding the B4 base pins, is 1o0 mm tall.
Reference: 1043. Type D210SW was first introduced in 1936.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.1
150
-4.5
2.4
12,000
1.35
Updated March 26, 2019.
shape:classic construction:pinch type:triode age:1930.1940 base:b4 heater:2.0v pins:4 pin:1.a pin:2.- pin:3.f pin:4.f pin:tc.g1
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