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5894

Sensibly equivalent to:
5894B AX9903 CV424 QQV06-40 RS1009
    
Extras ▼

 

The 5894 is a European pattern double beam tetrode for use as transmitter power amplifiers, frequency multipliers etc. It can also be used as a Class B modulator.
The heater is centre tapped so it can be used in mains based designs and/or directly with 12 Volt vehicle batteries as the heater supply.
The inside of the envelope has a smokey appearance that prevents full details being seen. The anode plates are either side of the central tower. The screen grid is common to both sections.
One of the grey anode plates. The anode is flat across the working area and then bent outward for extra rigidity.
The wide glass tube envelope is 44 mm in diameter, and excluding the B7A base pins is 74 mm tall.
References: Datasheet, 1040 & 1043. Type 5894 was first introduced in 1955.

 

Pin Connections
B7A
1
2
3
4
5
6
7
tc
tc
h
g1(2)
g2
k,bp
hct
g1
h
a
a(2)

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
mAg
Pdriv
Pout
Pdiss
freq
f.max
6.3
1.6
400
145
-45
170
17
4.5
0.23W
44
20W
125
500
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December19, 2013.
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