▼ Menu

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
    
Extras ▼

 

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 has the older logo and was an import. However, at the time the phrase used was Foreign Made.
The anode seen end on. The top mica is a double disc and holds the getter carrier.
Here the anode can be seen to have a central depression. This arrangement provides a small flat piece of metal close to the grid and a much larger heatsink around it.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins, is 48 mm long.
References: Datasheet & 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 January 28, 2019.
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
Return to Main Index