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EC90

by MD0MDI
EC90 Valve

Quantity in Stock

11

Location

Box E.1

The EC90 triode was specified as both an amplifier and an RF power valve.

In the latter role it would deliver 5.5 Watts with a very small envelope volume, this would make it ideal for hand portable equipment.

In larger apparatus it could deliver enough drive power for much larger PA’s.

The thin glass tube envelope is 18 mm in diameter and has an overall length, excluding the B7G base pins, of 45 mm.

B7G Base
EC90 Schematic Symbol
EC90 Pinouts

Pin 1: Anode
Pin 2: No Connection
Pin 3: Heater
Pin 4: Heater
Pin 5: Anode
Pin 6: Grid
Pin 7: Cathode

Specifications

Vf : 6.3v
If : 150mA
Va : 250v
Vg1 : -8.5v
Ia : 10.5mA
Ra : 7.7kΩ
Cgk : 1.8pF
Cak : 1.3pF
Cga : 1.6pF

Substitutes

CV133
CV852
L77
V741

Datasheets

EC90 Philips Datasheet

EC90 Philips Datasheet

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135.57 KB 10 downloads

Thanks to the Valve Museum for the information collected here.

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