▼ Menu

216A

Sensibly equivalent to:
R216A
    
Extras ▼

 

The Western Electric 216A was first made in 1922 and used in the WE7A amplifier. The filament rating of 5.5-6.0 Volts was designed to be operated from lead acid accumulators without the need for a variable dropping resistor.
The 216A differs from the 101D or the UK made 4101D only in the filament rating. Like the 4101D the Type designation is pressed into the wax filling of the base shell.
This exhibit has the Type designation on the base shell as well as a paper label. Early examples used base shells from the 101D. Later versions had black plastic bases.
The attached data-sheet is as rare as the box.
The rare original box.
Thanks to Joe Gruber for sending the images.
The balloon envelope is 59 mm in diameter, and excluding the UV base pins is 102 mm tall.
References: Data-sheet, 1047 & 3003. Type 216A was first introduced in 1922.

 

Pin Connections
UV
1
2
3
4
g1
f
f
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
5.5-6.0
1.0
190
-20
12.0
5,600
1.07
6
PDF scanned from an original document held by the museum
Updated July 06, 2021.
Return to Main Index