EK90 = 6BE6

Equivalent 6BE6, 6BE6W, 5750, D79, X727, V885, HM04, X77
Similar type  
With different Vf HK90 = 12BE6
LK90 = 4BE6
XK90 = 3BE6
CV number CV132, CV453, CV5895, CV10496
Swedish Mil.nr. M2462-413, M2462-464,
M2462-498
Tektronix part no 154-0025-00