Quantity in Stock
119
Location
Box E.1
The Mullard ECC81 was designed for RF use and is of medium impedance.
It was used as a frequency changer in five station television sets.
In this application the oscillator triode would be the first to cease working.
The ECC81 also makes an excellent phase splitter in modern audio applications.
The thin glass tube envelope is 20 mm in diameter and excluding B9A base pins the length is 47 mm.
Pin 1 : Anode (2)
Pin 2 : Grid Number 1 (2)
Pin 3 : Cathode (2)
Pin 4 : Heater
Pin 5 : Heater
Pin 6 : Anode (1)
Pin 7 : Grid Number 1 (1)
Pin 8 : Cathode (1)
Pin 9 : HCT
Specifications
Vf : 6.3v
If : 300mA
Va : 250v
Vg : -2.0v
mAa : 10mA
Ra : 10kΩ
Substitutes
12AT7
CV455
CV8154
CV9859
CV10662
12ATWA (Different Rating or Performance)
12AT7WC (Different Rating or Performance)
6060 (Different Rating or Performance)
6201 (Different Rating or Performance)
6679 (Different Rating or Performance)
7492 (Different Rating or Performance)
7728 (Different Rating or Performance)
A2900 (Different Rating or Performance)
B152 (Different Rating or Performance)
B309 (Different Rating or Performance)
B739 (Different Rating or Performance)
CC81E (Different Rating or Performance)
CK6201 (Different Rating or Performance)
CV4024 (Different Rating or Performance)
E2157 (Different Rating or Performance)
E81CC (Different Rating or Performance)
ECC801 (Different Rating or Performance)
ECC801S (Different Rating or Performance)
M8162 (Different Rating or Performance)
QA2406 (Different Rating or Performance)
QA2407 (Different Rating or Performance)
QS2406 (Different Rating or Performance)
Datasheets
Thanks to the Valve Museum for the information collected here.