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30FL2

Sensibly equivalent to:
PCF812
    
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The 30FL2 is a television valve in a miniature envelope, the 6FL2 is identical except for the heater, which is 6.3 V at 0.5 A.
The triode, low power beam tetrode was designed as line time base and sync separator. The 30FL2 was used in the time base circuitry of the once very common Thorn 1500 mono television chassis. Models using this chassis included sets sold under the names of Ferguson, Ultra, Radio Rentals et al. In the Thorn 1500 chassis the 30FL2 triode section was used in blocking oscillator configuration as the line oscillator and the beam tetrode as the sync pulse separator. It is believed that the 30FL2 is an enhanced version of the 30FL1. Thanks to Simon Pearson for additional data on the 30FL1 and 30FL2.
Zaerix are known for selling valves made in Eastern Europe but this is a British made valve.
The partly open end of the beam tetrode anode reveals the screen grid support. The control grid is wound on copper support rods.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 50 mm tall.
References: Datasheet & private communication.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a
g1(t)
k(t)
h
h
a
g2
g1
k,bp,s

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
10.4
0.3
170
170
-2.1
10
2.5
7.5

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
200
-7.7
10
5300
3.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 14, 2014.
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