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EL34 Datasheet PDF - Svetlana

Part Number EL34
Description High Performance Audio Power Pentode
Manufacturers Svetlana 
Logo Svetlana Logo 

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SVETLANA TECHNICAL DATA
EL34/6CA7
High Performance Audio Power
Characteristics
T
Pentode
he SvetlanaEL34 is a glass envelope power pentode having a plate dissipation rating
of 25 Watts with convection cooling. It is intended for audio frequency power
amplification service in either pentode, ultralinear or triode connection and single or
push-pull/parallel applications. The Svetlana EL34 has an indirectly-heated oxide cathode,
which may be DC operated for the absolute best hum/noise performance.
The Svetlana EL34 plate is made from a laminated material that improves heat transfer and
has superior performance under overload conditions which are often seen with guitar amplifi-
ers. Close manufacturing specification tolerances and improved processing provide enhanced
reliability and superior sonic performance. The high sensitivity of a pair or quad of Svetlana
EL34's is an economical method to achieve high quality sound with a minimum of driving
stage components.
The Svetlana EL34 is manufactured with the original Mullard design in the Svetlana factory
in St. Petersburg, Russia, and is designed to be a direct replacement for any EL34/6CA7 or
equivalent. The Svetlana EL34 gives electrical and audio performance very similar to that of
the original Mullard EL34.
Svetlana Outline drawing
Electrical
Heater:
Min. Nom. Max.
Voltage (AC or DC)
5.7 6.3 6.9 V
Current
1.6 A
Cathode:
Oxide-coated, unipotential
Cathode-to-heater potential, max.
100 V
Direct interelectrode capacitances, max.***
Grid no.1 to cathode and grid no.3, grid no.2,
base sleeve and heater
<16 pF
Plate to cathode and grid no.3, grid no.2,
base sleeve and heater
<0.6 pF
Grid no.1 to plate
<1.1 pF
Mechanical
Operating Position
Any
32mm
98mm
Base
Maximum dimensions:
Height
Seated height
Diameter
Cooling
Approximate net weight
JEDEC #8ET, octal, 8-pin
113 mm (4.45 in.)
98 mm (3.86 in.)
32 mm (1.26 in.)
Convection
60 g (2.1 oz.)
113mm
***Without external shielding, nominal values
AF Power Amplifier
Maximum ratings
DC plate voltage
Grid no.2 DC (screen) voltage
Grid no.1 (control) voltage
DC cathode current
Plate dissipation
Grid no.2 DC (screen) dissipation
Bulb temperature (surface hottest point)
800 V
500 V
-100 V
150 mA
25 W
8W
250˚ C
Bottom View
Octal Base Connections
G2
4
P
3
G1
5
NC
2
H
1
G3
7
H
8
K
Svetlana



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