| Manufacturer | Part Number | Description |
|---|---|---|
RFT
| ECC81 | Steile Doppeltriode |
Philips Semiconductors (now NXP Semiconductors)
| ECC81 | Double Triode 1955 |
| Unknown Manufacturer | ECC81 | Double Triode |
TELEFUNKEN
| ECC8100 | Twin Triode |
|
Philips Semiconductors (now NXP Semiconductors)
| ECC81 | R.F. Double Triode 1969 |
Ei-RC
| ECC81 | Double Triode |
JJ
| ECC81 | A. F. DOUBLE TRIODE |
RCA
| ECC81 | Beam Power Tube |
MAZDABELVU
| ECC812 | Double Triode |
| BRIMAR | ECC81 | Receiving Valve |
|
MAZDABELVU
| ECC81 | Double Triode |
