jj-electronic KT88 User Manual
KT88
max 125,0
max 52,0
max 110,0
A. F. BEAM PENTODE
Base: OCTAL
Uf = 6,3 V
If = 1,6 A
Typical Characteristics:
Ua = 250 V
Ug2 = 250 V
Ia = 140 mA
Ig2 = max. 7 mA
Ug1 = -15 V
S = 11,5 mA/V
Ri = 12 kΩ
µ
= 8
-g1-g2
Triode Connected
U
= 250 V
a, g2
I
= 147 mA
a+g2
Ug1 = -15 V
S = 12 mA/V
Ri = 670 Ω
µ = 8
Red/Blue versions available
Limiting Values:
Ua = 800 V
Ug2 = 600 V
U
= 600 V
a, g2
Ug1 = -200 V
Wa = 42 W
Wg2 = 8 W
W
= 46 W
a+g2
I
= 230 mA
k
U
= 250 V
k/f
R
(cathode bias)
g1-k
W
≤35 W 470 kΩ
a+g2
W
>35 W 270 kΩ
a+g2
R
(fixed bias)
g1-k
W
≤35 W 220 kΩ
a+g2
W
>35 W 100 kΩ
a+g2
Capacitances:
cg1 = 16,5 pF
ca = 10 pF
cg1-a = 2,3 pF
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2=300V
)(
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0
100
200
300
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100 200 300 400 500
Ua(V) Ua(V)
Ug2(V)
A. F. BEAM PENTODE
PLATE CHARACTERISTICSULTRA LINEAR CONNECTION 40% TAPS
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