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PC86

Sensibly equivalent to:
4CM4
See also:
Valves and their Habits - The PC97 Tutorial - Mullard Triodes for UHF Tuners - PC86 and PC88 Advert - PC86 and PC88 Advert - Valves for Dual Standard TVs
    
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The PC86 is a purpose designed UHF oscillator triode for television reception. Mullard describe the PC86 as: a UHF frame-grid mixer/oscillator triode.
This exhibit is marked Made in Holland. Philips owned Mullard.
The anode receiving the electrons is a very small part of the overall metal used. The useful area is at the end of the rectangular trough.
The width of the electrode assembly is just over 5 mm.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins, is 49 mm long.
References: Data-sheet & 1040. Type PC86 was first introduced in 1962.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a
g1
k
h
h
g1
k
g1
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
3.8
0.3
175
-1.5
12
4850
3.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 24, 2020.
shape:thin.glass.tube construction:all.glass type:triode age:1960.1975 base:b9a heater:300ma pins:9 pin:1.a pin:2.g1 pin:3.k pin:4.h pin:5.h pin:6.g1 pin:7.k pin:8.g1 pin:9.a
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