PC88 @ The Valve Museum

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PC88

Sensibly equivalent^¶ to:

4DL4

See also:

PC88 - UHF Tuner Valve - making a Mullard Valve - Valves and their Habits

Extras ▼

Philips G8LSD Valve Collection Other PC88 exhibits

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: Data-sheet & ¹⁰⁴⁰. Type PC88 was first introduced in 1962. See also 1962 adverts.

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 February 03, 2019.

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