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PC88

Sensibly equivalent to:
4DL4
See also:
PC88 - UHF Tuner Valve - Valves and their Habits
    
Extras ▼

 

The PC88 is a UHF triode designed for grounded grid operation in the front end RF amplifier in Band IV and Band V television tuners. Mullard describe the PC88 as: a UHF frame-grid grounded grid amplifier triode. Miniwatt is a trade name of Philips and Mullard are the UK subsidiary of Philips.
The construction is planar. The flattened cathode has a frame grid to one side only, beyond the grid is a square U channel anode with its flat end to the grid. The approach to a minimising the lead inductance is to use multiple pins for the grid connection. The relatively high anode current was employed to reduce noise.
Mullard designed a UHF TV tuner around the PC88 operated as a grounded grid amplifier and a PC86 self oscillating mixer. These designs date from 1961.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
References: Datasheet & 1040. Type PC88 was first introduced in 1962.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
3.8
0.3
160
-1.25
12.5
4,800
13.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 02, 2015.
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