EBF89

by MD0MDI
EBF89 Valve

Quantity in Stock

11

Location

Box E.1

The EBF89 features two signal diodes and a variable μ pentode in the one envelope and sharing a common cathode.

The diode anodes are small plates placed either side of an extended cathode tube.

The variable μ characteristic is indicative of a device designed to have its gain controlled by an AGC system.

This places this valve in service as a final IF amplifier and detector.

The high impedance of the pentode supports the case for use with a tuned circuit connected to the anode.

Type EBF89 was first introduced in 1958.

B9A Noval
EBF80 Schematic Symbol
EFB80 Pinouts

Pin 1: Grid Number 2
Pin 2: Grid Number 1
Pin 3: Cathode, Internal Screen
Pin 4: Heater
Pin 5: Heater
Pin 6: Anode
Pin 7: Anode (D1)
Pin 8: Anode (D2)
Pin 9: Grid Number 3

Specifications

Vf : 6.3v
If : 300mA
Va : 250v
Vs : 100v
Vg : -2v
mAa : 9mA
mAs : 2.7mA
Ra : 1MΩ

Substitutes

6DC8
6FD12
10FD12 (Different Filament Voltage)
UBF89 (Different Filament Voltage)

Datasheets

EBF89 Mazda Datasheet

EBF89 Mazda Datasheet

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483.00 KB 9 downloads

EBF89 Philips Datasheet 1

EBF89 Philips Datasheet 1

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65.44 KB 14 downloads

EBF89 Philips Datasheet 2

EBF89 Philips Datasheet 2

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209.23 KB 10 downloads

EBF89 Tesla Datasheet

EBF89 Tesla Datasheet

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1.23 MB 11 downloads

Thanks to the Valve Museum for the information collected here.

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