Philips el509 DATASHEETS
SVETLANA TECHNICAL DATA
EL509/6KG6
High Performance Beam Power
Tetrode
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 manu-
T
facturing 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.
Characteristics
Electrical
Heater: min nom max
Voltage (AC or DC) 5.7 6.3 6.9 V
Current @6.3 volts 2.5 A
Transconductance (nominal) 18,000
Plate resistance (nominal) 8000 ohms
Interelectrode capacitances (typical):
Grid to plate 2.5 pF
Grid to cathode 25 pF
Mechanical
Cooling Radiation and convection
Base Nine pin magnoval, glass button
Basing diagram JEDEC 9RJ
Socket Svetlana SK509 or equivalent
Anode connector 1/4" plate clip, standard sweep tube type
Operation position Axis vertical, base down or horizontal
Nominal dimensions:
Diameter 45.6mm (1.75 in)
Base to top of envelope 96.6 mm (3.81 in)
Overall height (not including plate cap) 105.3 mm (4.145 in)
Overall height (including plate cap) 117.9 mm (4.641 in)
Net weight 110 gm
Maximum Ratings
DC plate voltage 900 V
DC plate voltage, pulsed 8000 V
DC cathode current 500 mA
DC screen grid voltage 300 V
Screen dissipation 7 W
Plate dissipation 35 W
Svetlana
ELECTRON DEVICES
Headquarters:
8200 South Memorial Parkway
Huntsville, AL 35802
USA
Phone: 205 882 1344
Fax: 205 880 8077
www.svetlana.com
Marketing & Engineering:
3000 Alpine Road
Portola Valley, CA 94028
USA
Phone: 415 233 0429
Fax: 415 233 0439
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1/99
Svetlana Outline drawing
A
B
Svetlana
ELECTRON DEVICES
EL509/6KG6
Made in Russia
Dimensional Data
Dim. Millimeters Inches
A 45.6 1.75
B 96.6 3.81
C 105.3 4.145
D 117.9 4.641
Plate
Grid
Heater
5
4
3
2
1
6
9
Screen
7
8
Cathode
Screen
Beam
Plates
Heater
C
Beam
Plates
Grid
D
Svetlana EL509/6KG6
High Performance
Beam Power Tetrode
Typical Operation, Class A1, Audio Amplifier (single tube)
Plate voltage 500 V
Screen voltage 280 V
Grid no.1 voltage -82 V
Peak grid drive 50 Vp-p
Plate current, no signal 70 mA
Plate current, max signal 100 mA
Effective load resistance 1650 ohms
Distortion at 1 watt into 8 ohms 0.9 %
Power output at 5% distortion 14 W
625
Eg=0 V
Svetlana EL509
Typical Plate Characteristics
Screen Voltage = 140 V
250
200
150
100
50
PLATE CURRENT (Ip, mA)
0
500
-5
-10
375
-15
250
PLATE CURRENT (Ip, mA)
125
-20
-25
-30
-35
-40
0
0
0
100
200 300 400
PLATE VOLTAGE (Ep, V)
200 400 600 800 1000 1200 1400 1600
PLATE VOLTAGE (Ep, V)
Svetlana EL509
Typical Plate Characteristics
Svetlana EL509
Typical Plate Charicteristics
Screen Grid connected to Control Grid,
Both driven
+10
500
600 700 800 900
+7.5
+5.0
+2.5
+1.0
Egrids = 0 V
-1.0
-2.5
-5
-50
500
400
300
200
PLATE CURRENT (Ip, mA)
100
0
0
250 500 750 1000
PLATE VOLTAGE (Ep, V)
Control Grid Voltage = 0 V
Screen driven - "Enhanced Triode"
+50
+40
+30
+20
+10
Eg2 = 0 V
-10
-20
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