ECF82 = 6U8

Equivalent 6U8, 7731
Similar type 6678
With different Vf XCF82 = 5U8
CV number CV5065, CV9858,
Swedish Mil.nr. M2462-409900
M2462-528C
Tektronix part no 154-0033-00
Hewlett-Packard part no. 1933-0004
1933-0013