KT 88

6550
A.F. BEAM PENTODE

DIMENSIONS AND CONNECTIONS:

base: OCTAL
Uf = 6,3 V
If = ca 1,6 A

TYPICAL CHARACTERISTIC:

Ua = 250 V
Ug2 = 250 V
Ia = 140 mA
Ig2 = max 7 mA
-Ug1 = 15 V
S = 11,5 mA/V
Ri = 12 kOhm
-g1-g2 = 8
Triode connected
Ua,g2 = 250 V
Ia+g2 = 147 mA
-Ug1 = 15 V
S = 12 mA/V
Ri = 670 Ohm
= 8

LIMITING VALUES:

Ua = 800 V
Ug2 = 600 V
Ua, g2 = 600 V
-Ug1 = 200 V
Wa = 42 W
Wg2 = 8 W
Pa-g2 = 46 W
Ik = 230 mA
Uk/f = 250 V
Rg1-k (cathode bias)
    Wa+g2 <=35W
470 KOhm
    Wa+g2 >35W
270 KOhm
Rg1-k (fixed bias)
    Wa+g2 <=35W
220 KOhm
    Wa+g2 >35W
100 KOhm

RED / BLUE versions available
CAPACITANCES:

Cg1 = 16,5 pF
Ca = 10 pF
Ca/g1 = 2,3 pF