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SVETLANA TECHNICAL DATA
EL509/6KG6
High Performance Beam Power
Tetrode
T
he Svetlana EL509/6KG6 is a beam power tetrode intended for use in class A,
AB or B audio amplifiers and for class B or C RF amplification. Close manufacturing specification tolerances and improved high voltage processing
provides improved reliability and superior performance.
The Svetlana EL509/6KG6 features:
Increased peak cathode emission from new cathode materials; Stable operation from
extended processing and aging; Gold-plated grid; Precise grid/screen alignment; Extraheavy glass envelope for ruggedness; Improved vacuum processing; Comprehensive
testing before and after aging.
The Svetlana EL509/6KG6 is manufactured in Russia at the Svetlana factory and is
designed to be a direct replacement for any 6KG6 or EL509. The strict manufacturing
and quality controls at the Svetlana plant assure functionality and long life.
Svetlana Outline drawing
Characteristics
Electrical
Heater:
Voltage (AC or DC)
Current @6.3 volts
Transconductance (nominal)
Plate resistance (nominal)
Interelectrode capacitances (typical):
Grid to plate
Grid to cathode
min
5.7
nom
6.3
2.5
max
6.9
A
18,000
8000
V
A
µS
ohms
2.5
25
pF
pF
B
Mechanical
Cooling
Base
Basing diagram
Socket
Anode connector
Operation position
Nominal dimensions:
Diameter
Base to top of envelope
Overall height (not including plate cap)
Overall height (including plate cap)
Net weight
Svetlana
Radiation and convection
Nine pin magnoval, glass button
JEDEC 9RJ
Svetlana SK509 or equivalent
1/4" plate clip, standard sweep tube type
Axis vertical, base down or horizontal
ELECTRON DEVICES
EL509/6KG6
D
45.6mm (1.75 in)
96.6 mm (3.81 in)
105.3 mm (4.145 in)
117.9 mm (4.641 in)
110 gm
Dimensional Data
Dim.
A
B
C
D
Maximum Ratings
DC plate voltage
DC plate voltage, pulsed
DC cathode current
DC screen grid voltage
Screen dissipation
Plate dissipation
900
8000
500
300
7
35
C
Made in Russia
V
V
mA
V
W
W
Millimeters
45.6
96.6
105.3
117.9
Inches
1.75
3.81
4.145
4.641
Plate
Heater
Heater
5
4
Screen
Headquarters:
8200 South Memorial Parkway
Huntsville, AL 35802
USA
Phone:
205 882 1344
Fax:
205 880 8077
Svetlana
ELECTRON DEVICES
www.svetlana.com
Marketing & Engineering:
3000 Alpine Road
Portola Valley, CA 94028
USA
Phone:
415 233 0429
Fax:
415 233 0439
6
Beam
7 Plates
3
8 Grid
Beam 2
Plates
1
Grid
1/99
Screen
9
Cathode
Svetlana EL509/6KG6
High Performance
Beam Power Tetrode
Typical Operation, Class A1, Audio Amplifier (single tube)
Plate voltage
Screen voltage
Grid no.1 voltage
Peak grid drive
Plate current, no signal
Plate current, max signal
Effective load resistance
Distortion at 1 watt into 8 ohms
Power output at 5% distortion
500
280
-82
50
70
100
1650
0.9
14
V
V
V
Vp-p
mA
mA
ohms
%
W
Svetlana EL509
Typical Plate Characteristics
Screen Voltage = 140 V
Eg=0 V
PLATE CURRENT (Ip, mA)
625
-5
500
-10
375
-15
250
-20
-25
-30
125
-35
-40
0
200
0
400
600
800
1000
1200
1400
1600
PLATE VOLTAGE (Ep, V)
Svetlana EL509
Typical Plate Characteristics
Control Grid Voltage = 0 V
Screen driven - "Enhanced Triode"
PLATE CURRENT (Ip, mA)
Screen Grid connected to Control Grid,
Both driven
+10
250
+7.5
+5.0
+2.5
+1.0
200
150
Egrids = 0 V
-1.0
100
-2.5
50
PLATE CURRENT (Ip, mA)
Svetlana EL509
Typical Plate Charicteristics
500
+50
400
+40
+30
300
+20
200
+10
Eg2 = 0 V
100
-10
-20
-5
-50
0
0
100
200
300
400
500
600
700
PLATE VOLTAGE (Ep, V)
800
900
0
0
250
500
750
PLATE VOLTAGE (Ep, V)
1000