Mullard EF55 Pentode Valve

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  Delivery policy

Items will be despatched using the selected carrier within 2 business days (sometimes sooner).

  Return policy

Returns are accepted within 7 days of receipt unless otherwise stated on the item.

EF55 VHF high slope pentode amplifier valve / vacuum tube by Mullard on a B9G base.   This device was a further development of the famous EF50 and was designed for fairly substantial wide-band video output service, especially in early radar systems. 


Heater = 6.3V @ 1.0A

Anode / Plate:  250V / 40mA / 55Kohm
Screen Grid: 250V / 5.5mA
Signal Grid: -4.5V
gm: 12.5mA/V

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