ECF80 = 6BL8
Equivalent
6BL8, E80CF, 7643
Similar type
E80CF
With different Vf
LCF80 = 6LN8
PCF80 = 9A8
UCF80 = 27BL8
XCF80 = 4BL8
CV number
CV5215
Swedish Mil.nr.
M2462-546
Tektronix part no
154-0278-00
Hewlett-Packard part no.
1933-0008